repo stringlengths 7 90 | file_url stringlengths 81 315 | file_path stringlengths 4 228 | content stringlengths 0 32.8k | language stringclasses 1
value | license stringclasses 7
values | commit_sha stringlengths 40 40 | retrieved_at stringdate 2026-01-04 14:38:15 2026-01-05 02:33:18 | truncated bool 2
classes |
|---|---|---|---|---|---|---|---|---|
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/0007_alter_validators_add_error_messages.py | django/contrib/auth/migrations/0007_alter_validators_add_error_messages.py | from django.contrib.auth import validators
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("auth", "0006_require_contenttypes_0002"),
]
operations = [
migrations.AlterField(
model_name="user",
name="username",
field=models.CharField(
error_messages={"unique": "A user with that username already exists."},
help_text=(
"Required. 30 characters or fewer. Letters, digits and @/./+/-/_ "
"only."
),
max_length=30,
unique=True,
validators=[validators.UnicodeUsernameValidator()],
verbose_name="username",
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/__init__.py | django/contrib/auth/migrations/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/0009_alter_user_last_name_max_length.py | django/contrib/auth/migrations/0009_alter_user_last_name_max_length.py | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("auth", "0008_alter_user_username_max_length"),
]
operations = [
migrations.AlterField(
model_name="user",
name="last_name",
field=models.CharField(
blank=True, max_length=150, verbose_name="last name"
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/0011_update_proxy_permissions.py | django/contrib/auth/migrations/0011_update_proxy_permissions.py | import sys
from django.core.management.color import color_style
from django.db import IntegrityError, migrations, transaction
from django.db.models import Q
WARNING = """
A problem arose migrating proxy model permissions for {old} to {new}.
Permission(s) for {new} already existed.
Codenames Q: {query}
Ensure to audit ALL permissions for {old} and {new}.
"""
def update_proxy_model_permissions(apps, schema_editor, reverse=False):
"""
Update the content_type of proxy model permissions to use the ContentType
of the proxy model.
"""
style = color_style()
Permission = apps.get_model("auth", "Permission")
ContentType = apps.get_model("contenttypes", "ContentType")
alias = schema_editor.connection.alias
for Model in apps.get_models():
opts = Model._meta
if not opts.proxy:
continue
proxy_default_permissions_codenames = [
"%s_%s" % (action, opts.model_name) for action in opts.default_permissions
]
permissions_query = Q(codename__in=proxy_default_permissions_codenames)
for codename, name in opts.permissions:
permissions_query |= Q(codename=codename, name=name)
content_type_manager = ContentType.objects.db_manager(alias)
concrete_content_type = content_type_manager.get_for_model(
Model, for_concrete_model=True
)
proxy_content_type = content_type_manager.get_for_model(
Model, for_concrete_model=False
)
old_content_type = proxy_content_type if reverse else concrete_content_type
new_content_type = concrete_content_type if reverse else proxy_content_type
try:
with transaction.atomic(using=alias):
Permission.objects.using(alias).filter(
permissions_query,
content_type=old_content_type,
).update(content_type=new_content_type)
except IntegrityError:
old = "{}_{}".format(old_content_type.app_label, old_content_type.model)
new = "{}_{}".format(new_content_type.app_label, new_content_type.model)
sys.stdout.write(
style.WARNING(WARNING.format(old=old, new=new, query=permissions_query))
)
def revert_proxy_model_permissions(apps, schema_editor):
"""
Update the content_type of proxy model permissions to use the ContentType
of the concrete model.
"""
update_proxy_model_permissions(apps, schema_editor, reverse=True)
class Migration(migrations.Migration):
dependencies = [
("auth", "0010_alter_group_name_max_length"),
("contenttypes", "0002_remove_content_type_name"),
]
operations = [
migrations.RunPython(
update_proxy_model_permissions, revert_proxy_model_permissions
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/0004_alter_user_username_opts.py | django/contrib/auth/migrations/0004_alter_user_username_opts.py | from django.contrib.auth import validators
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("auth", "0003_alter_user_email_max_length"),
]
# No database changes; modifies validators and error_messages (#13147).
operations = [
migrations.AlterField(
model_name="user",
name="username",
field=models.CharField(
error_messages={"unique": "A user with that username already exists."},
max_length=30,
validators=[validators.UnicodeUsernameValidator()],
help_text=(
"Required. 30 characters or fewer. Letters, digits and @/./+/-/_ "
"only."
),
unique=True,
verbose_name="username",
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/0012_alter_user_first_name_max_length.py | django/contrib/auth/migrations/0012_alter_user_first_name_max_length.py | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("auth", "0011_update_proxy_permissions"),
]
operations = [
migrations.AlterField(
model_name="user",
name="first_name",
field=models.CharField(
blank=True, max_length=150, verbose_name="first name"
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/migrations/0005_alter_user_last_login_null.py | django/contrib/auth/migrations/0005_alter_user_last_login_null.py | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("auth", "0004_alter_user_username_opts"),
]
operations = [
migrations.AlterField(
model_name="user",
name="last_login",
field=models.DateTimeField(
null=True, verbose_name="last login", blank=True
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/handlers/modwsgi.py | django/contrib/auth/handlers/modwsgi.py | from django import db
from django.contrib import auth
UserModel = auth.get_user_model()
def check_password(environ, username, password):
"""
Authenticate against Django's auth database.
mod_wsgi docs specify None, True, False as return value depending
on whether the user exists and authenticates.
"""
# db connection state is managed similarly to the wsgi handler
# as mod_wsgi may call these functions outside of a request/response cycle
db.reset_queries()
try:
try:
user = UserModel._default_manager.get_by_natural_key(username)
except UserModel.DoesNotExist:
return None
if not user.is_active:
return None
return user.check_password(password)
finally:
db.close_old_connections()
def groups_for_user(environ, username):
"""
Authorize a user based on groups
"""
db.reset_queries()
try:
try:
user = UserModel._default_manager.get_by_natural_key(username)
except UserModel.DoesNotExist:
return []
if not user.is_active:
return []
return [group.name.encode() for group in user.groups.all()]
finally:
db.close_old_connections()
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/auth/handlers/__init__.py | django/contrib/auth/handlers/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/admin.py | django/contrib/redirects/admin.py | from django.contrib import admin
from django.contrib.redirects.models import Redirect
@admin.register(Redirect)
class RedirectAdmin(admin.ModelAdmin):
list_display = ("old_path", "new_path")
list_filter = ("site",)
search_fields = ("old_path", "new_path")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/middleware.py | django/contrib/redirects/middleware.py | from django.apps import apps
from django.conf import settings
from django.contrib.redirects.models import Redirect
from django.contrib.sites.shortcuts import get_current_site
from django.core.exceptions import ImproperlyConfigured
from django.http import HttpResponseGone, HttpResponsePermanentRedirect
from django.utils.deprecation import MiddlewareMixin
class RedirectFallbackMiddleware(MiddlewareMixin):
# Defined as class-level attributes to be subclassing-friendly.
response_gone_class = HttpResponseGone
response_redirect_class = HttpResponsePermanentRedirect
def __init__(self, get_response):
if not apps.is_installed("django.contrib.sites"):
raise ImproperlyConfigured(
"You cannot use RedirectFallbackMiddleware when "
"django.contrib.sites is not installed."
)
super().__init__(get_response)
def process_response(self, request, response):
# No need to check for a redirect for non-404 responses.
if response.status_code != 404:
return response
full_path = request.get_full_path()
current_site = get_current_site(request)
r = None
try:
r = Redirect.objects.get(site=current_site, old_path=full_path)
except Redirect.DoesNotExist:
pass
if r is None and settings.APPEND_SLASH and not request.path.endswith("/"):
try:
r = Redirect.objects.get(
site=current_site,
old_path=request.get_full_path(force_append_slash=True),
)
except Redirect.DoesNotExist:
pass
if r is not None:
if r.new_path == "":
return self.response_gone_class()
return self.response_redirect_class(r.new_path)
# No redirect was found. Return the response.
return response
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/models.py | django/contrib/redirects/models.py | from django.contrib.sites.models import Site
from django.db import models
from django.utils.translation import gettext_lazy as _
class Redirect(models.Model):
site = models.ForeignKey(Site, models.CASCADE, verbose_name=_("site"))
old_path = models.CharField(
_("redirect from"),
max_length=200,
db_index=True,
help_text=_(
"This should be an absolute path, excluding the domain name. Example: "
"“/events/search/”."
),
)
new_path = models.CharField(
_("redirect to"),
max_length=200,
blank=True,
help_text=_(
"This can be either an absolute path (as above) or a full URL "
"starting with a scheme such as “https://”."
),
)
class Meta:
verbose_name = _("redirect")
verbose_name_plural = _("redirects")
db_table = "django_redirect"
unique_together = [["site", "old_path"]]
ordering = ["old_path"]
def __str__(self):
return "%s ---> %s" % (self.old_path, self.new_path)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/__init__.py | django/contrib/redirects/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/apps.py | django/contrib/redirects/apps.py | from django.apps import AppConfig
from django.utils.translation import gettext_lazy as _
class RedirectsConfig(AppConfig):
default_auto_field = "django.db.models.AutoField"
name = "django.contrib.redirects"
verbose_name = _("Redirects")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/migrations/0002_alter_redirect_new_path_help_text.py | django/contrib/redirects/migrations/0002_alter_redirect_new_path_help_text.py | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("redirects", "0001_initial"),
]
operations = [
migrations.AlterField(
model_name="redirect",
name="new_path",
field=models.CharField(
blank=True,
help_text=(
"This can be either an absolute path (as above) or a full "
"URL starting with a scheme such as “https://”."
),
max_length=200,
verbose_name="redirect to",
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/migrations/0001_initial.py | django/contrib/redirects/migrations/0001_initial.py | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("sites", "0001_initial"),
]
operations = [
migrations.CreateModel(
name="Redirect",
fields=[
(
"id",
models.AutoField(
verbose_name="ID",
serialize=False,
auto_created=True,
primary_key=True,
),
),
(
"site",
models.ForeignKey(
to="sites.Site",
on_delete=models.CASCADE,
verbose_name="site",
),
),
(
"old_path",
models.CharField(
help_text=(
"This should be an absolute path, excluding the domain "
"name. Example: “/events/search/”."
),
max_length=200,
verbose_name="redirect from",
db_index=True,
),
),
(
"new_path",
models.CharField(
help_text=(
"This can be either an absolute path (as above) or a full "
"URL starting with “http://”."
),
max_length=200,
verbose_name="redirect to",
blank=True,
),
),
],
options={
"ordering": ["old_path"],
"unique_together": {("site", "old_path")},
"db_table": "django_redirect",
"verbose_name": "redirect",
"verbose_name_plural": "redirects",
},
bases=(models.Model,),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/redirects/migrations/__init__.py | django/contrib/redirects/migrations/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/sites.py | django/contrib/admin/sites.py | from functools import update_wrapper
from weakref import WeakSet
from django.apps import apps
from django.conf import settings
from django.contrib.admin import ModelAdmin, actions
from django.contrib.admin.exceptions import AlreadyRegistered, NotRegistered
from django.contrib.admin.views.autocomplete import AutocompleteJsonView
from django.contrib.auth import REDIRECT_FIELD_NAME
from django.contrib.auth.decorators import login_not_required
from django.core.exceptions import ImproperlyConfigured
from django.db.models.base import ModelBase
from django.http import Http404, HttpResponsePermanentRedirect, HttpResponseRedirect
from django.template.response import TemplateResponse
from django.urls import NoReverseMatch, Resolver404, resolve, reverse, reverse_lazy
from django.utils.decorators import method_decorator
from django.utils.functional import LazyObject
from django.utils.module_loading import import_string
from django.utils.text import capfirst
from django.utils.translation import gettext as _
from django.utils.translation import gettext_lazy
from django.views.decorators.cache import never_cache
from django.views.decorators.common import no_append_slash
from django.views.decorators.csrf import csrf_protect
from django.views.i18n import JavaScriptCatalog
all_sites = WeakSet()
class AdminSite:
"""
An AdminSite object encapsulates an instance of the Django admin
application, ready to be hooked in to your URLconf. Models are registered
with the AdminSite using the register() method, and the get_urls() method
can then be used to access Django view functions that present a full admin
interface for the collection of registered models.
"""
# Text to put at the end of each page's <title>.
site_title = gettext_lazy("Django site admin")
# Text to put in each page's <div id="site-name">.
site_header = gettext_lazy("Django administration")
# Text to put at the top of the admin index page.
index_title = gettext_lazy("Site administration")
# URL for the "View site" link at the top of each admin page.
site_url = "/"
enable_nav_sidebar = True
empty_value_display = "-"
login_form = None
index_template = None
app_index_template = None
login_template = None
logout_template = None
password_change_form = None
password_change_template = None
password_change_done_template = None
final_catch_all_view = True
def __init__(self, name="admin"):
self._registry = {} # model_class class -> admin_class instance
self.name = name
self._actions = {"delete_selected": actions.delete_selected}
self._global_actions = self._actions.copy()
all_sites.add(self)
def __repr__(self):
return f"{self.__class__.__name__}(name={self.name!r})"
def check(self, app_configs):
"""
Run the system checks on all ModelAdmins, except if they aren't
customized at all.
"""
if app_configs is None:
app_configs = apps.get_app_configs()
app_configs = set(app_configs) # Speed up lookups below
errors = []
modeladmins = (
o for o in self._registry.values() if o.__class__ is not ModelAdmin
)
for modeladmin in modeladmins:
if modeladmin.model._meta.app_config in app_configs:
errors.extend(modeladmin.check())
return errors
def register(self, model_or_iterable, admin_class=None, **options):
"""
Register the given model(s) with the given admin class.
The model(s) should be Model classes, not instances.
If an admin class isn't given, use ModelAdmin (the default admin
options). If keyword arguments are given -- e.g., list_display --
apply them as options to the admin class.
If a model is already registered, raise AlreadyRegistered.
If a model is abstract, raise ImproperlyConfigured.
"""
admin_class = admin_class or ModelAdmin
if isinstance(model_or_iterable, ModelBase):
model_or_iterable = [model_or_iterable]
for model in model_or_iterable:
if model._meta.abstract:
raise ImproperlyConfigured(
"The model %s is abstract, so it cannot be registered with admin."
% model.__name__
)
if model._meta.is_composite_pk:
raise ImproperlyConfigured(
"The model %s has a composite primary key, so it cannot be "
"registered with admin." % model.__name__
)
if self.is_registered(model):
registered_admin = str(self.get_model_admin(model))
msg = "The model %s is already registered " % model.__name__
if registered_admin.endswith(".ModelAdmin"):
# Most likely registered without a ModelAdmin subclass.
msg += "in app %r." % registered_admin.removesuffix(".ModelAdmin")
else:
msg += "with %r." % registered_admin
raise AlreadyRegistered(msg)
# Ignore the registration if the model has been
# swapped out.
if not model._meta.swapped:
# If we got **options then dynamically construct a subclass of
# admin_class with those **options.
if options:
# For reasons I don't quite understand, without a
# __module__ the created class appears to "live" in the
# wrong place, which causes issues later on.
options["__module__"] = __name__
admin_class = type(
"%sAdmin" % model.__name__, (admin_class,), options
)
# Instantiate the admin class to save in the registry
self._registry[model] = admin_class(model, self)
def unregister(self, model_or_iterable):
"""
Unregister the given model(s).
If a model isn't already registered, raise NotRegistered.
"""
if isinstance(model_or_iterable, ModelBase):
model_or_iterable = [model_or_iterable]
for model in model_or_iterable:
if not self.is_registered(model):
raise NotRegistered("The model %s is not registered" % model.__name__)
del self._registry[model]
def is_registered(self, model):
"""
Check if a model class is registered with this `AdminSite`.
"""
return model in self._registry
def get_model_admin(self, model):
try:
return self._registry[model]
except KeyError:
raise NotRegistered(f"The model {model.__name__} is not registered.")
def add_action(self, action, name=None):
"""
Register an action to be available globally.
"""
name = name or action.__name__
self._actions[name] = action
self._global_actions[name] = action
def disable_action(self, name):
"""
Disable a globally-registered action. Raise KeyError for invalid names.
"""
del self._actions[name]
def get_action(self, name):
"""
Explicitly get a registered global action whether it's enabled or
not. Raise KeyError for invalid names.
"""
return self._global_actions[name]
@property
def actions(self):
"""
Get all the enabled actions as an iterable of (name, func).
"""
return self._actions.items()
def has_permission(self, request):
"""
Return True if the given HttpRequest has permission to view
*at least one* page in the admin site.
"""
return request.user.is_active and request.user.is_staff
def admin_view(self, view, cacheable=False):
"""
Decorator to create an admin view attached to this ``AdminSite``. This
wraps the view and provides permission checking by calling
``self.has_permission``.
You'll want to use this from within ``AdminSite.get_urls()``:
class MyAdminSite(AdminSite):
def get_urls(self):
from django.urls import path
urls = super().get_urls()
urls += [
path('my_view/', self.admin_view(some_view))
]
return urls
By default, admin_views are marked non-cacheable using the
``never_cache`` decorator. If the view can be safely cached, set
cacheable=True.
"""
def inner(request, *args, **kwargs):
if not self.has_permission(request):
if request.path == reverse("admin:logout", current_app=self.name):
index_path = reverse("admin:index", current_app=self.name)
return HttpResponseRedirect(index_path)
# Inner import to prevent django.contrib.admin (app) from
# importing django.contrib.auth.models.User (unrelated model).
from django.contrib.auth.views import redirect_to_login
return redirect_to_login(
request.get_full_path(),
reverse("admin:login", current_app=self.name),
)
return view(request, *args, **kwargs)
if not cacheable:
inner = never_cache(inner)
# We add csrf_protect here so this function can be used as a utility
# function for any view, without having to repeat 'csrf_protect'.
if not getattr(view, "csrf_exempt", False):
inner = csrf_protect(inner)
return update_wrapper(inner, view)
def get_urls(self):
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level,
# and django.contrib.contenttypes.views imports ContentType.
from django.contrib.contenttypes import views as contenttype_views
from django.urls import include, path, re_path
def wrap(view, cacheable=False):
def wrapper(*args, **kwargs):
return self.admin_view(view, cacheable)(*args, **kwargs)
wrapper.admin_site = self
# Used by LoginRequiredMiddleware.
wrapper.login_url = reverse_lazy("admin:login", current_app=self.name)
return update_wrapper(wrapper, view)
# Admin-site-wide views.
urlpatterns = [
path("", wrap(self.index), name="index"),
path("login/", self.login, name="login"),
path("logout/", wrap(self.logout), name="logout"),
path(
"password_change/",
wrap(self.password_change, cacheable=True),
name="password_change",
),
path(
"password_change/done/",
wrap(self.password_change_done, cacheable=True),
name="password_change_done",
),
path("autocomplete/", wrap(self.autocomplete_view), name="autocomplete"),
path("jsi18n/", wrap(self.i18n_javascript, cacheable=True), name="jsi18n"),
path(
"r/<path:content_type_id>/<path:object_id>/",
wrap(contenttype_views.shortcut),
name="view_on_site",
),
]
# Add in each model's views, and create a list of valid URLS for the
# app_index
valid_app_labels = []
for model, model_admin in self._registry.items():
urlpatterns += [
path(
"%s/%s/" % (model._meta.app_label, model._meta.model_name),
include(model_admin.urls),
),
]
if model._meta.app_label not in valid_app_labels:
valid_app_labels.append(model._meta.app_label)
# If there were ModelAdmins registered, we should have a list of app
# labels for which we need to allow access to the app_index view,
if valid_app_labels:
regex = r"^(?P<app_label>" + "|".join(valid_app_labels) + ")/$"
urlpatterns += [
re_path(regex, wrap(self.app_index), name="app_list"),
]
if self.final_catch_all_view:
urlpatterns.append(re_path(r"(?P<url>.*)$", wrap(self.catch_all_view)))
return urlpatterns
@property
def urls(self):
return self.get_urls(), "admin", self.name
def each_context(self, request):
"""
Return a dictionary of variables to put in the template context for
*every* page in the admin site.
For sites running on a subpath, use the SCRIPT_NAME value if site_url
hasn't been customized.
"""
script_name = request.META["SCRIPT_NAME"]
site_url = (
script_name if self.site_url == "/" and script_name else self.site_url
)
return {
"site_title": self.site_title,
"site_header": self.site_header,
"site_url": site_url,
"has_permission": self.has_permission(request),
"available_apps": self.get_app_list(request),
"is_popup": False,
"is_nav_sidebar_enabled": self.enable_nav_sidebar,
"log_entries": self.get_log_entries(request),
}
def password_change(self, request, extra_context=None):
"""
Handle the "change password" task -- both form display and validation.
"""
from django.contrib.admin.forms import AdminPasswordChangeForm
from django.contrib.auth.views import PasswordChangeView
url = reverse("admin:password_change_done", current_app=self.name)
defaults = {
"form_class": self.password_change_form or AdminPasswordChangeForm,
"success_url": url,
"extra_context": {**self.each_context(request), **(extra_context or {})},
}
if self.password_change_template is not None:
defaults["template_name"] = self.password_change_template
request.current_app = self.name
return PasswordChangeView.as_view(**defaults)(request)
def password_change_done(self, request, extra_context=None):
"""
Display the "success" page after a password change.
"""
from django.contrib.auth.views import PasswordChangeDoneView
defaults = {
"extra_context": {**self.each_context(request), **(extra_context or {})},
}
if self.password_change_done_template is not None:
defaults["template_name"] = self.password_change_done_template
request.current_app = self.name
return PasswordChangeDoneView.as_view(**defaults)(request)
def i18n_javascript(self, request, extra_context=None):
"""
Display the i18n JavaScript that the Django admin requires.
`extra_context` is unused but present for consistency with the other
admin views.
"""
return JavaScriptCatalog.as_view(packages=["django.contrib.admin"])(request)
def logout(self, request, extra_context=None):
"""
Log out the user for the given HttpRequest.
This should *not* assume the user is already logged in.
"""
from django.contrib.auth.views import LogoutView
defaults = {
"extra_context": {
**self.each_context(request),
# Since the user isn't logged out at this point, the value of
# has_permission must be overridden.
"has_permission": False,
**(extra_context or {}),
},
}
if self.logout_template is not None:
defaults["template_name"] = self.logout_template
request.current_app = self.name
return LogoutView.as_view(**defaults)(request)
@method_decorator(never_cache)
@login_not_required
def login(self, request, extra_context=None):
"""
Display the login form for the given HttpRequest.
"""
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level,
# and django.contrib.admin.forms eventually imports User.
from django.contrib.admin.forms import AdminAuthenticationForm
from django.contrib.auth.views import LoginView
redirect_url = LoginView().get_redirect_url(request) or reverse(
"admin:index", current_app=self.name
)
if request.method == "GET" and self.has_permission(request):
# Already logged-in, redirect accordingly.
return HttpResponseRedirect(redirect_url)
context = {
**self.each_context(request),
"title": _("Log in"),
"subtitle": None,
"app_path": request.get_full_path(),
"username": request.user.get_username(),
REDIRECT_FIELD_NAME: redirect_url,
}
context.update(extra_context or {})
defaults = {
"extra_context": context,
"authentication_form": self.login_form or AdminAuthenticationForm,
"template_name": self.login_template or "admin/login.html",
}
request.current_app = self.name
return LoginView.as_view(**defaults)(request)
def autocomplete_view(self, request):
return AutocompleteJsonView.as_view(admin_site=self)(request)
@no_append_slash
def catch_all_view(self, request, url):
if settings.APPEND_SLASH and not url.endswith("/"):
urlconf = getattr(request, "urlconf", None)
try:
match = resolve("%s/" % request.path_info, urlconf)
except Resolver404:
pass
else:
if getattr(match.func, "should_append_slash", True):
return HttpResponsePermanentRedirect(
request.get_full_path(force_append_slash=True)
)
raise Http404
def _build_app_dict(self, request, label=None):
"""
Build the app dictionary. The optional `label` parameter filters models
of a specific app.
"""
app_dict = {}
if label:
models = {
m: m_a
for m, m_a in self._registry.items()
if m._meta.app_label == label
}
else:
models = self._registry
for model, model_admin in models.items():
app_label = model._meta.app_label
has_module_perms = model_admin.has_module_permission(request)
if not has_module_perms:
continue
perms = model_admin.get_model_perms(request)
# Check whether user has any perm for this module.
# If so, add the module to the model_list.
if True not in perms.values():
continue
info = (app_label, model._meta.model_name)
model_dict = {
"model": model,
"name": capfirst(model._meta.verbose_name_plural),
"object_name": model._meta.object_name,
"perms": perms,
"admin_url": None,
"add_url": None,
}
if perms.get("change") or perms.get("view"):
model_dict["view_only"] = not perms.get("change")
try:
model_dict["admin_url"] = reverse(
"admin:%s_%s_changelist" % info, current_app=self.name
)
except NoReverseMatch:
pass
if perms.get("add"):
try:
model_dict["add_url"] = reverse(
"admin:%s_%s_add" % info, current_app=self.name
)
except NoReverseMatch:
pass
if app_label in app_dict:
app_dict[app_label]["models"].append(model_dict)
else:
app_dict[app_label] = {
"name": apps.get_app_config(app_label).verbose_name,
"app_label": app_label,
"app_url": reverse(
"admin:app_list",
kwargs={"app_label": app_label},
current_app=self.name,
),
"has_module_perms": has_module_perms,
"models": [model_dict],
}
return app_dict
def get_app_list(self, request, app_label=None):
"""
Return a sorted list of all the installed apps that have been
registered in this site.
"""
app_dict = self._build_app_dict(request, app_label)
# Sort the apps alphabetically.
app_list = sorted(app_dict.values(), key=lambda x: x["name"].lower())
# Sort the models alphabetically within each app.
for app in app_list:
app["models"].sort(key=lambda x: x["name"])
return app_list
def index(self, request, extra_context=None):
"""
Display the main admin index page, which lists all of the installed
apps that have been registered in this site.
"""
app_list = self.get_app_list(request)
context = {
**self.each_context(request),
"title": self.index_title,
"subtitle": None,
"app_list": app_list,
**(extra_context or {}),
}
request.current_app = self.name
return TemplateResponse(
request, self.index_template or "admin/index.html", context
)
def app_index(self, request, app_label, extra_context=None):
app_list = self.get_app_list(request, app_label)
if not app_list:
raise Http404("The requested admin page does not exist.")
context = {
**self.each_context(request),
"title": _("%(app)s administration") % {"app": app_list[0]["name"]},
"subtitle": None,
"app_list": app_list,
"app_label": app_label,
**(extra_context or {}),
}
request.current_app = self.name
return TemplateResponse(
request,
self.app_index_template
or ["admin/%s/app_index.html" % app_label, "admin/app_index.html"],
context,
)
def get_log_entries(self, request):
from django.contrib.admin.models import LogEntry
return LogEntry.objects.select_related("content_type", "user")
class DefaultAdminSite(LazyObject):
def _setup(self):
AdminSiteClass = import_string(apps.get_app_config("admin").default_site)
self._wrapped = AdminSiteClass()
def __repr__(self):
return repr(self._wrapped)
# This global object represents the default admin site, for the common case.
# You can provide your own AdminSite using the (Simple)AdminConfig.default_site
# attribute. You can also instantiate AdminSite in your own code to create a
# custom admin site.
site = DefaultAdminSite()
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/checks.py | django/contrib/admin/checks.py | import collections
from itertools import chain
from django.apps import apps
from django.conf import settings
from django.contrib.admin.exceptions import NotRegistered
from django.contrib.admin.utils import NotRelationField, flatten, get_fields_from_path
from django.core import checks
from django.core.exceptions import FieldDoesNotExist
from django.db import models
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import Combinable
from django.forms.models import BaseModelForm, BaseModelFormSet, _get_foreign_key
from django.template import engines
from django.template.backends.django import DjangoTemplates
from django.utils.module_loading import import_string
def _issubclass(cls, classinfo):
"""
issubclass() variant that doesn't raise an exception if cls isn't a
class.
"""
try:
return issubclass(cls, classinfo)
except TypeError:
return False
def _contains_subclass(class_path, candidate_paths):
"""
Return whether or not a dotted class path (or a subclass of that class) is
found in a list of candidate paths.
"""
cls = import_string(class_path)
for path in candidate_paths:
try:
candidate_cls = import_string(path)
except ImportError:
# ImportErrors are raised elsewhere.
continue
if _issubclass(candidate_cls, cls):
return True
return False
def check_admin_app(app_configs, **kwargs):
from django.contrib.admin.sites import all_sites
errors = []
for site in all_sites:
errors.extend(site.check(app_configs))
return errors
def check_dependencies(**kwargs):
"""
Check that the admin's dependencies are correctly installed.
"""
from django.contrib.admin.sites import all_sites
if not apps.is_installed("django.contrib.admin"):
return []
errors = []
app_dependencies = (
("django.contrib.contenttypes", 401),
("django.contrib.auth", 405),
("django.contrib.messages", 406),
)
for app_name, error_code in app_dependencies:
if not apps.is_installed(app_name):
errors.append(
checks.Error(
"'%s' must be in INSTALLED_APPS in order to use the admin "
"application." % app_name,
id="admin.E%d" % error_code,
)
)
for engine in engines.all():
if isinstance(engine, DjangoTemplates):
django_templates_instance = engine.engine
break
else:
django_templates_instance = None
if not django_templates_instance:
errors.append(
checks.Error(
"A 'django.template.backends.django.DjangoTemplates' instance "
"must be configured in TEMPLATES in order to use the admin "
"application.",
id="admin.E403",
)
)
else:
if (
"django.contrib.auth.context_processors.auth"
not in django_templates_instance.context_processors
and _contains_subclass(
"django.contrib.auth.backends.ModelBackend",
settings.AUTHENTICATION_BACKENDS,
)
):
errors.append(
checks.Error(
"'django.contrib.auth.context_processors.auth' must be "
"enabled in DjangoTemplates (TEMPLATES) if using the default "
"auth backend in order to use the admin application.",
id="admin.E402",
)
)
if (
"django.contrib.messages.context_processors.messages"
not in django_templates_instance.context_processors
):
errors.append(
checks.Error(
"'django.contrib.messages.context_processors.messages' must "
"be enabled in DjangoTemplates (TEMPLATES) in order to use "
"the admin application.",
id="admin.E404",
)
)
sidebar_enabled = any(site.enable_nav_sidebar for site in all_sites)
if (
sidebar_enabled
and "django.template.context_processors.request"
not in django_templates_instance.context_processors
):
errors.append(
checks.Warning(
"'django.template.context_processors.request' must be enabled "
"in DjangoTemplates (TEMPLATES) in order to use the admin "
"navigation sidebar.",
id="admin.W411",
)
)
if not _contains_subclass(
"django.contrib.auth.middleware.AuthenticationMiddleware", settings.MIDDLEWARE
):
errors.append(
checks.Error(
"'django.contrib.auth.middleware.AuthenticationMiddleware' must "
"be in MIDDLEWARE in order to use the admin application.",
id="admin.E408",
)
)
if not _contains_subclass(
"django.contrib.messages.middleware.MessageMiddleware", settings.MIDDLEWARE
):
errors.append(
checks.Error(
"'django.contrib.messages.middleware.MessageMiddleware' must "
"be in MIDDLEWARE in order to use the admin application.",
id="admin.E409",
)
)
if not _contains_subclass(
"django.contrib.sessions.middleware.SessionMiddleware", settings.MIDDLEWARE
):
errors.append(
checks.Error(
"'django.contrib.sessions.middleware.SessionMiddleware' must "
"be in MIDDLEWARE in order to use the admin application.",
hint=(
"Insert "
"'django.contrib.sessions.middleware.SessionMiddleware' "
"before "
"'django.contrib.auth.middleware.AuthenticationMiddleware'."
),
id="admin.E410",
)
)
return errors
class BaseModelAdminChecks:
def check(self, admin_obj, **kwargs):
return [
*self._check_autocomplete_fields(admin_obj),
*self._check_raw_id_fields(admin_obj),
*self._check_fields(admin_obj),
*self._check_fieldsets(admin_obj),
*self._check_exclude(admin_obj),
*self._check_form(admin_obj),
*self._check_filter_vertical(admin_obj),
*self._check_filter_horizontal(admin_obj),
*self._check_radio_fields(admin_obj),
*self._check_prepopulated_fields(admin_obj),
*self._check_view_on_site_url(admin_obj),
*self._check_ordering(admin_obj),
*self._check_readonly_fields(admin_obj),
]
def _check_autocomplete_fields(self, obj):
"""
Check that `autocomplete_fields` is a list or tuple of model fields.
"""
if not isinstance(obj.autocomplete_fields, (list, tuple)):
return must_be(
"a list or tuple",
option="autocomplete_fields",
obj=obj,
id="admin.E036",
)
else:
return list(
chain.from_iterable(
[
self._check_autocomplete_fields_item(
obj, field_name, "autocomplete_fields[%d]" % index
)
for index, field_name in enumerate(obj.autocomplete_fields)
]
)
)
def _check_autocomplete_fields_item(self, obj, field_name, label):
"""
Check that an item in `autocomplete_fields` is a ForeignKey or a
ManyToManyField and that the item has a related ModelAdmin with
search_fields defined.
"""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E037"
)
else:
if not field.many_to_many and not isinstance(field, models.ForeignKey):
return must_be(
"a foreign key or a many-to-many field",
option=label,
obj=obj,
id="admin.E038",
)
try:
related_admin = obj.admin_site.get_model_admin(field.remote_field.model)
except NotRegistered:
return [
checks.Error(
'An admin for model "%s" has to be registered '
"to be referenced by %s.autocomplete_fields."
% (
field.remote_field.model.__name__,
type(obj).__name__,
),
obj=obj.__class__,
id="admin.E039",
)
]
else:
if not related_admin.search_fields:
return [
checks.Error(
'%s must define "search_fields", because it\'s '
"referenced by %s.autocomplete_fields."
% (
related_admin.__class__.__name__,
type(obj).__name__,
),
obj=obj.__class__,
id="admin.E040",
)
]
return []
def _check_raw_id_fields(self, obj):
"""Check that `raw_id_fields` only contains field names that are listed
on the model."""
if not isinstance(obj.raw_id_fields, (list, tuple)):
return must_be(
"a list or tuple", option="raw_id_fields", obj=obj, id="admin.E001"
)
else:
return list(
chain.from_iterable(
self._check_raw_id_fields_item(
obj, field_name, "raw_id_fields[%d]" % index
)
for index, field_name in enumerate(obj.raw_id_fields)
)
)
def _check_raw_id_fields_item(self, obj, field_name, label):
"""Check an item of `raw_id_fields`, i.e. check that field named
`field_name` exists in model `model` and is a ForeignKey or a
ManyToManyField."""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E002"
)
else:
# Using attname is not supported.
if field.name != field_name:
return refer_to_missing_field(
field=field_name,
option=label,
obj=obj,
id="admin.E002",
)
if not field.many_to_many and not isinstance(field, models.ForeignKey):
return must_be(
"a foreign key or a many-to-many field",
option=label,
obj=obj,
id="admin.E003",
)
else:
return []
def _check_fields(self, obj):
"""Check that `fields` only refer to existing fields, doesn't contain
duplicates. Check if at most one of `fields` and `fieldsets` is
defined.
"""
if obj.fields is None:
return []
elif not isinstance(obj.fields, (list, tuple)):
return must_be("a list or tuple", option="fields", obj=obj, id="admin.E004")
elif obj.fieldsets:
return [
checks.Error(
"Both 'fieldsets' and 'fields' are specified.",
obj=obj.__class__,
id="admin.E005",
)
]
field_counts = collections.Counter(flatten(obj.fields))
if duplicate_fields := [
field for field, count in field_counts.items() if count > 1
]:
return [
checks.Error(
"The value of 'fields' contains duplicate field(s).",
hint="Remove duplicates of %s."
% ", ".join(map(repr, duplicate_fields)),
obj=obj.__class__,
id="admin.E006",
)
]
return list(
chain.from_iterable(
self._check_field_spec(obj, field_name, "fields")
for field_name in obj.fields
)
)
def _check_fieldsets(self, obj):
"""Check that fieldsets is properly formatted and doesn't contain
duplicates."""
if obj.fieldsets is None:
return []
elif not isinstance(obj.fieldsets, (list, tuple)):
return must_be(
"a list or tuple", option="fieldsets", obj=obj, id="admin.E007"
)
else:
seen_fields = []
return list(
chain.from_iterable(
self._check_fieldsets_item(
obj, fieldset, "fieldsets[%d]" % index, seen_fields
)
for index, fieldset in enumerate(obj.fieldsets)
)
)
def _check_fieldsets_item(self, obj, fieldset, label, seen_fields):
"""Check an item of `fieldsets`, i.e. check that this is a pair of a
set name and a dictionary containing "fields" key."""
if not isinstance(fieldset, (list, tuple)):
return must_be("a list or tuple", option=label, obj=obj, id="admin.E008")
elif len(fieldset) != 2:
return must_be("of length 2", option=label, obj=obj, id="admin.E009")
elif not isinstance(fieldset[1], dict):
return must_be(
"a dictionary", option="%s[1]" % label, obj=obj, id="admin.E010"
)
elif "fields" not in fieldset[1]:
return [
checks.Error(
"The value of '%s[1]' must contain the key 'fields'." % label,
obj=obj.__class__,
id="admin.E011",
)
]
elif not isinstance(fieldset[1]["fields"], (list, tuple)):
return must_be(
"a list or tuple",
option="%s[1]['fields']" % label,
obj=obj,
id="admin.E008",
)
fieldset_fields = flatten(fieldset[1]["fields"])
seen_fields.extend(fieldset_fields)
field_counts = collections.Counter(seen_fields)
fieldset_fields_set = set(fieldset_fields)
if duplicate_fields := [
field
for field, count in field_counts.items()
if count > 1 and field in fieldset_fields_set
]:
return [
checks.Error(
"There are duplicate field(s) in '%s[1]'." % label,
hint="Remove duplicates of %s."
% ", ".join(map(repr, duplicate_fields)),
obj=obj.__class__,
id="admin.E012",
)
]
return list(
chain.from_iterable(
self._check_field_spec(obj, fieldset_fields, '%s[1]["fields"]' % label)
for fieldset_fields in fieldset[1]["fields"]
)
)
def _check_field_spec(self, obj, fields, label):
"""`fields` should be an item of `fields` or an item of
fieldset[1]['fields'] for any `fieldset` in `fieldsets`. It should be a
field name or a tuple of field names."""
if isinstance(fields, tuple):
return list(
chain.from_iterable(
self._check_field_spec_item(
obj, field_name, "%s[%d]" % (label, index)
)
for index, field_name in enumerate(fields)
)
)
else:
return self._check_field_spec_item(obj, fields, label)
def _check_field_spec_item(self, obj, field_name, label):
if field_name in obj.readonly_fields:
# Stuff can be put in fields that isn't actually a model field if
# it's in readonly_fields, readonly_fields will handle the
# validation of such things.
return []
else:
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
# If we can't find a field on the model that matches, it could
# be an extra field on the form.
return []
else:
if (
isinstance(field, models.ManyToManyField)
and not field.remote_field.through._meta.auto_created
):
return [
checks.Error(
"The value of '%s' cannot include the ManyToManyField "
"'%s', because that field manually specifies a "
"relationship model." % (label, field_name),
obj=obj.__class__,
id="admin.E013",
)
]
else:
return []
def _check_exclude(self, obj):
"""Check that exclude is a sequence without duplicates."""
if obj.exclude is None: # default value is None
return []
elif not isinstance(obj.exclude, (list, tuple)):
return must_be(
"a list or tuple", option="exclude", obj=obj, id="admin.E014"
)
field_counts = collections.Counter(obj.exclude)
if duplicate_fields := [
field for field, count in field_counts.items() if count > 1
]:
return [
checks.Error(
"The value of 'exclude' contains duplicate field(s).",
hint="Remove duplicates of %s."
% ", ".join(map(repr, duplicate_fields)),
obj=obj.__class__,
id="admin.E015",
)
]
else:
return []
def _check_form(self, obj):
"""Check that form subclasses BaseModelForm."""
if not _issubclass(obj.form, BaseModelForm):
return must_inherit_from(
parent="BaseModelForm", option="form", obj=obj, id="admin.E016"
)
else:
return []
def _check_filter_vertical(self, obj):
"""Check that filter_vertical is a sequence of field names."""
if not isinstance(obj.filter_vertical, (list, tuple)):
return must_be(
"a list or tuple", option="filter_vertical", obj=obj, id="admin.E017"
)
else:
return list(
chain.from_iterable(
self._check_filter_item(
obj, field_name, "filter_vertical[%d]" % index
)
for index, field_name in enumerate(obj.filter_vertical)
)
)
def _check_filter_horizontal(self, obj):
"""Check that filter_horizontal is a sequence of field names."""
if not isinstance(obj.filter_horizontal, (list, tuple)):
return must_be(
"a list or tuple", option="filter_horizontal", obj=obj, id="admin.E018"
)
else:
return list(
chain.from_iterable(
self._check_filter_item(
obj, field_name, "filter_horizontal[%d]" % index
)
for index, field_name in enumerate(obj.filter_horizontal)
)
)
def _check_filter_item(self, obj, field_name, label):
"""Check one item of `filter_vertical` or `filter_horizontal`, i.e.
check that given field exists and is a ManyToManyField."""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E019"
)
else:
if not field.many_to_many or isinstance(field, models.ManyToManyRel):
return must_be(
"a many-to-many field", option=label, obj=obj, id="admin.E020"
)
elif not field.remote_field.through._meta.auto_created:
return [
checks.Error(
f"The value of '{label}' cannot include the ManyToManyField "
f"'{field_name}', because that field manually specifies a "
f"relationship model.",
obj=obj.__class__,
id="admin.E013",
)
]
else:
return []
def _check_radio_fields(self, obj):
"""Check that `radio_fields` is a dictionary."""
if not isinstance(obj.radio_fields, dict):
return must_be(
"a dictionary", option="radio_fields", obj=obj, id="admin.E021"
)
else:
return list(
chain.from_iterable(
self._check_radio_fields_key(obj, field_name, "radio_fields")
+ self._check_radio_fields_value(
obj, val, 'radio_fields["%s"]' % field_name
)
for field_name, val in obj.radio_fields.items()
)
)
def _check_radio_fields_key(self, obj, field_name, label):
"""Check that a key of `radio_fields` dictionary is name of existing
field and that the field is a ForeignKey or has `choices` defined."""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E022"
)
else:
if not (isinstance(field, models.ForeignKey) or field.choices):
return [
checks.Error(
"The value of '%s' refers to '%s', which is not an "
"instance of ForeignKey, and does not have a 'choices' "
"definition." % (label, field_name),
obj=obj.__class__,
id="admin.E023",
)
]
else:
return []
def _check_radio_fields_value(self, obj, val, label):
"""Check type of a value of `radio_fields` dictionary."""
from django.contrib.admin.options import HORIZONTAL, VERTICAL
if val not in (HORIZONTAL, VERTICAL):
return [
checks.Error(
"The value of '%s' must be either admin.HORIZONTAL or "
"admin.VERTICAL." % label,
obj=obj.__class__,
id="admin.E024",
)
]
else:
return []
def _check_view_on_site_url(self, obj):
if not callable(obj.view_on_site) and not isinstance(obj.view_on_site, bool):
return [
checks.Error(
"The value of 'view_on_site' must be a callable or a boolean "
"value.",
obj=obj.__class__,
id="admin.E025",
)
]
else:
return []
def _check_prepopulated_fields(self, obj):
"""Check that `prepopulated_fields` is a dictionary containing allowed
field types."""
if not isinstance(obj.prepopulated_fields, dict):
return must_be(
"a dictionary", option="prepopulated_fields", obj=obj, id="admin.E026"
)
else:
return list(
chain.from_iterable(
self._check_prepopulated_fields_key(
obj, field_name, "prepopulated_fields"
)
+ self._check_prepopulated_fields_value(
obj, val, 'prepopulated_fields["%s"]' % field_name
)
for field_name, val in obj.prepopulated_fields.items()
)
)
def _check_prepopulated_fields_key(self, obj, field_name, label):
"""Check a key of `prepopulated_fields` dictionary, i.e. check that it
is a name of existing field and the field is one of the allowed types.
"""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E027"
)
else:
if isinstance(
field, (models.DateTimeField, models.ForeignKey, models.ManyToManyField)
):
return [
checks.Error(
"The value of '%s' refers to '%s', which must not be a "
"DateTimeField, a ForeignKey, a OneToOneField, or a "
"ManyToManyField." % (label, field_name),
obj=obj.__class__,
id="admin.E028",
)
]
else:
return []
def _check_prepopulated_fields_value(self, obj, val, label):
"""Check a value of `prepopulated_fields` dictionary, i.e. it's an
iterable of existing fields."""
if not isinstance(val, (list, tuple)):
return must_be("a list or tuple", option=label, obj=obj, id="admin.E029")
else:
return list(
chain.from_iterable(
self._check_prepopulated_fields_value_item(
obj, subfield_name, "%s[%r]" % (label, index)
)
for index, subfield_name in enumerate(val)
)
)
def _check_prepopulated_fields_value_item(self, obj, field_name, label):
"""For `prepopulated_fields` equal to {"slug": ("title",)},
`field_name` is "title"."""
try:
obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E030"
)
else:
return []
def _check_ordering(self, obj):
"""Check that ordering refers to existing fields or is random."""
# ordering = None
if obj.ordering is None: # The default value is None
return []
elif not isinstance(obj.ordering, (list, tuple)):
return must_be(
"a list or tuple", option="ordering", obj=obj, id="admin.E031"
)
else:
return list(
chain.from_iterable(
self._check_ordering_item(obj, field_name, "ordering[%d]" % index)
for index, field_name in enumerate(obj.ordering)
)
)
def _check_ordering_item(self, obj, field_name, label):
"""Check that `ordering` refers to existing fields."""
if isinstance(field_name, (Combinable, models.OrderBy)):
if not isinstance(field_name, models.OrderBy):
field_name = field_name.asc()
if isinstance(field_name.expression, models.F):
field_name = field_name.expression.name
else:
return []
if field_name == "?" and len(obj.ordering) != 1:
return [
checks.Error(
"The value of 'ordering' has the random ordering marker '?', "
"but contains other fields as well.",
hint='Either remove the "?", or remove the other fields.',
obj=obj.__class__,
id="admin.E032",
)
]
elif field_name == "?":
return []
elif LOOKUP_SEP in field_name:
# Skip ordering in the format field1__field2 (FIXME: checking
# this format would be nice, but it's a little fiddly).
return []
else:
field_name = field_name.removeprefix("-")
if field_name == "pk":
return []
try:
obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(
field=field_name, option=label, obj=obj, id="admin.E033"
)
else:
return []
def _check_readonly_fields(self, obj):
"""Check that readonly_fields refers to proper attribute or field."""
if obj.readonly_fields == ():
return []
elif not isinstance(obj.readonly_fields, (list, tuple)):
return must_be(
"a list or tuple", option="readonly_fields", obj=obj, id="admin.E034"
)
else:
return list(
chain.from_iterable(
self._check_readonly_fields_item(
obj, field_name, "readonly_fields[%d]" % index
)
for index, field_name in enumerate(obj.readonly_fields)
)
)
def _check_readonly_fields_item(self, obj, field_name, label):
if callable(field_name):
return []
elif hasattr(obj, field_name):
return []
elif hasattr(obj.model, field_name):
return []
else:
try:
obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return [
checks.Error(
"The value of '%s' refers to '%s', which is not a callable, "
"an attribute of '%s', or an attribute of '%s'."
% (
label,
field_name,
obj.__class__.__name__,
obj.model._meta.label,
),
obj=obj.__class__,
id="admin.E035",
)
]
else:
return []
class ModelAdminChecks(BaseModelAdminChecks):
def check(self, admin_obj, **kwargs):
return [
*super().check(admin_obj),
*self._check_save_as(admin_obj),
*self._check_save_on_top(admin_obj),
*self._check_inlines(admin_obj),
*self._check_list_display(admin_obj),
*self._check_list_display_links(admin_obj),
*self._check_list_filter(admin_obj),
*self._check_list_select_related(admin_obj),
*self._check_list_per_page(admin_obj),
*self._check_list_max_show_all(admin_obj),
*self._check_list_editable(admin_obj),
*self._check_search_fields(admin_obj),
*self._check_date_hierarchy(admin_obj),
*self._check_actions(admin_obj),
]
def _check_save_as(self, obj):
"""Check save_as is a boolean."""
if not isinstance(obj.save_as, bool):
return must_be("a boolean", option="save_as", obj=obj, id="admin.E101")
else:
return []
def _check_save_on_top(self, obj):
"""Check save_on_top is a boolean."""
if not isinstance(obj.save_on_top, bool):
return must_be("a boolean", option="save_on_top", obj=obj, id="admin.E102")
else:
return []
def _check_inlines(self, obj):
"""Check all inline model admin classes."""
if not isinstance(obj.inlines, (list, tuple)):
return must_be(
"a list or tuple", option="inlines", obj=obj, id="admin.E103"
)
else:
return list(
chain.from_iterable(
self._check_inlines_item(obj, item, "inlines[%d]" % index)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | true |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/models.py | django/contrib/admin/models.py | import json
from django.conf import settings
from django.contrib.admin.utils import quote
from django.contrib.contenttypes.models import ContentType
from django.db import models
from django.urls import NoReverseMatch, reverse
from django.utils import timezone
from django.utils.text import get_text_list
from django.utils.translation import gettext
from django.utils.translation import gettext_lazy as _
ADDITION = 1
CHANGE = 2
DELETION = 3
ACTION_FLAG_CHOICES = [
(ADDITION, _("Addition")),
(CHANGE, _("Change")),
(DELETION, _("Deletion")),
]
class LogEntryManager(models.Manager):
use_in_migrations = True
def log_actions(
self, user_id, queryset, action_flag, change_message="", *, single_object=False
):
if isinstance(change_message, list):
change_message = json.dumps(change_message)
log_entry_list = [
self.model(
user_id=user_id,
content_type_id=ContentType.objects.get_for_model(
obj, for_concrete_model=False
).id,
object_id=obj.pk,
object_repr=str(obj)[:200],
action_flag=action_flag,
change_message=change_message,
)
for obj in queryset
]
if len(log_entry_list) == 1:
instance = log_entry_list[0]
instance.save()
if single_object:
return instance
return [instance]
return self.model.objects.bulk_create(log_entry_list)
class LogEntry(models.Model):
action_time = models.DateTimeField(
_("action time"),
default=timezone.now,
editable=False,
)
user = models.ForeignKey(
settings.AUTH_USER_MODEL,
models.CASCADE,
verbose_name=_("user"),
)
content_type = models.ForeignKey(
ContentType,
models.SET_NULL,
verbose_name=_("content type"),
blank=True,
null=True,
)
object_id = models.TextField(_("object id"), blank=True, null=True)
# Translators: 'repr' means representation
# (https://docs.python.org/library/functions.html#repr)
object_repr = models.CharField(_("object repr"), max_length=200)
action_flag = models.PositiveSmallIntegerField(
_("action flag"), choices=ACTION_FLAG_CHOICES
)
# change_message is either a string or a JSON structure
change_message = models.TextField(_("change message"), blank=True)
objects = LogEntryManager()
class Meta:
verbose_name = _("log entry")
verbose_name_plural = _("log entries")
db_table = "django_admin_log"
ordering = ["-action_time"]
def __repr__(self):
return str(self.action_time)
def __str__(self):
if self.is_addition():
return gettext("Added “%(object)s”.") % {"object": self.object_repr}
elif self.is_change():
return gettext("Changed “%(object)s” — %(changes)s") % {
"object": self.object_repr,
"changes": self.get_change_message(),
}
elif self.is_deletion():
return gettext("Deleted “%(object)s.”") % {"object": self.object_repr}
return gettext("LogEntry Object")
def is_addition(self):
return self.action_flag == ADDITION
def is_change(self):
return self.action_flag == CHANGE
def is_deletion(self):
return self.action_flag == DELETION
def get_change_message(self):
"""
If self.change_message is a JSON structure, interpret it as a change
string, properly translated.
"""
if self.change_message and self.change_message[0] == "[":
try:
change_message = json.loads(self.change_message)
except json.JSONDecodeError:
return self.change_message
messages = []
for sub_message in change_message:
if "added" in sub_message:
if sub_message["added"]:
sub_message["added"]["name"] = gettext(
sub_message["added"]["name"]
)
messages.append(
gettext("Added {name} “{object}”.").format(
**sub_message["added"]
)
)
else:
messages.append(gettext("Added."))
elif "changed" in sub_message:
sub_message["changed"]["fields"] = get_text_list(
[
gettext(field_name)
for field_name in sub_message["changed"]["fields"]
],
gettext("and"),
)
if "name" in sub_message["changed"]:
sub_message["changed"]["name"] = gettext(
sub_message["changed"]["name"]
)
messages.append(
gettext("Changed {fields} for {name} “{object}”.").format(
**sub_message["changed"]
)
)
else:
messages.append(
gettext("Changed {fields}.").format(
**sub_message["changed"]
)
)
elif "deleted" in sub_message:
sub_message["deleted"]["name"] = gettext(
sub_message["deleted"]["name"]
)
messages.append(
gettext("Deleted {name} “{object}”.").format(
**sub_message["deleted"]
)
)
change_message = " ".join(msg[0].upper() + msg[1:] for msg in messages)
return change_message or gettext("No fields changed.")
else:
return self.change_message
def get_edited_object(self):
"""Return the edited object represented by this log entry."""
return self.content_type.get_object_for_this_type(pk=self.object_id)
def get_admin_url(self):
"""
Return the admin URL to edit the object represented by this log entry.
"""
if self.content_type and self.object_id:
url_name = "admin:%s_%s_change" % (
self.content_type.app_label,
self.content_type.model,
)
try:
return reverse(url_name, args=(quote(self.object_id),))
except NoReverseMatch:
pass
return None
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/exceptions.py | django/contrib/admin/exceptions.py | from django.core.exceptions import SuspiciousOperation
class DisallowedModelAdminLookup(SuspiciousOperation):
"""Invalid filter was passed to admin view via URL querystring"""
pass
class DisallowedModelAdminToField(SuspiciousOperation):
"""Invalid to_field was passed to admin view via URL query string"""
pass
class AlreadyRegistered(Exception):
"""The model is already registered."""
pass
class NotRegistered(Exception):
"""The model is not registered."""
pass
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/decorators.py | django/contrib/admin/decorators.py | def action(function=None, *, permissions=None, description=None):
"""
Conveniently add attributes to an action function::
@admin.action(
permissions=['publish'],
description='Mark selected stories as published',
)
def make_published(self, request, queryset):
queryset.update(status='p')
This is equivalent to setting some attributes (with the original, longer
names) on the function directly::
def make_published(self, request, queryset):
queryset.update(status='p')
make_published.allowed_permissions = ['publish']
make_published.short_description = 'Mark selected stories as published'
"""
def decorator(func):
if permissions is not None:
func.allowed_permissions = permissions
if description is not None:
func.short_description = description
return func
if function is None:
return decorator
else:
return decorator(function)
def display(
function=None, *, boolean=None, ordering=None, description=None, empty_value=None
):
"""
Conveniently add attributes to a display function::
@admin.display(
boolean=True,
ordering='-publish_date',
description='Is Published?',
)
def is_published(self, obj):
return obj.publish_date is not None
This is equivalent to setting some attributes (with the original, longer
names) on the function directly::
def is_published(self, obj):
return obj.publish_date is not None
is_published.boolean = True
is_published.admin_order_field = '-publish_date'
is_published.short_description = 'Is Published?'
"""
def decorator(func):
if boolean is not None and empty_value is not None:
raise ValueError(
"The boolean and empty_value arguments to the @display "
"decorator are mutually exclusive."
)
if boolean is not None:
func.boolean = boolean
if ordering is not None:
func.admin_order_field = ordering
if description is not None:
func.short_description = description
if empty_value is not None:
func.empty_value_display = empty_value
return func
if function is None:
return decorator
else:
return decorator(function)
def register(*models, site=None):
"""
Register the given model(s) classes and wrapped ModelAdmin class with
admin site:
@register(Author)
class AuthorAdmin(admin.ModelAdmin):
pass
The `site` kwarg is an admin site to use instead of the default admin site.
"""
from django.contrib.admin import ModelAdmin
from django.contrib.admin.sites import AdminSite
from django.contrib.admin.sites import site as default_site
def _model_admin_wrapper(admin_class):
if not models:
raise ValueError("At least one model must be passed to register.")
admin_site = site or default_site
if not isinstance(admin_site, AdminSite):
raise ValueError("site must subclass AdminSite")
if not issubclass(admin_class, ModelAdmin):
raise ValueError("Wrapped class must subclass ModelAdmin.")
admin_site.register(models, admin_class=admin_class)
return admin_class
return _model_admin_wrapper
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/widgets.py | django/contrib/admin/widgets.py | """
Form Widget classes specific to the Django admin site.
"""
import copy
import json
from django import forms
from django.conf import settings
from django.core.exceptions import ValidationError
from django.core.validators import URLValidator
from django.db.models import CASCADE, UUIDField
from django.forms.widgets import Select
from django.urls import reverse
from django.urls.exceptions import NoReverseMatch
from django.utils.html import smart_urlquote
from django.utils.http import urlencode
from django.utils.text import Truncator
from django.utils.translation import get_language
from django.utils.translation import gettext as _
class FilteredSelectMultiple(forms.SelectMultiple):
"""
A SelectMultiple with a JavaScript filter interface.
Note that the resulting JavaScript assumes that the jsi18n
catalog has been loaded in the page
"""
class Media:
js = [
"admin/js/core.js",
"admin/js/SelectBox.js",
"admin/js/SelectFilter2.js",
]
def __init__(self, verbose_name, is_stacked, attrs=None, choices=()):
self.verbose_name = verbose_name
self.is_stacked = is_stacked
super().__init__(attrs, choices)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context["widget"]["attrs"]["class"] = "selectfilter"
if self.is_stacked:
context["widget"]["attrs"]["class"] += "stacked"
context["widget"]["attrs"]["data-field-name"] = self.verbose_name
context["widget"]["attrs"]["data-is-stacked"] = int(self.is_stacked)
return context
class DateTimeWidgetContextMixin:
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context["widget"]["attrs"][
"aria-describedby"
] = f"id_{name}_timezone_warning_helptext"
return context
class BaseAdminDateWidget(DateTimeWidgetContextMixin, forms.DateInput):
class Media:
js = [
"admin/js/calendar.js",
"admin/js/admin/DateTimeShortcuts.js",
]
def __init__(self, attrs=None, format=None):
attrs = {"class": "vDateField", "size": "10", **(attrs or {})}
super().__init__(attrs=attrs, format=format)
class AdminDateWidget(BaseAdminDateWidget):
template_name = "admin/widgets/date.html"
class BaseAdminTimeWidget(DateTimeWidgetContextMixin, forms.TimeInput):
class Media:
js = [
"admin/js/calendar.js",
"admin/js/admin/DateTimeShortcuts.js",
]
def __init__(self, attrs=None, format=None):
attrs = {"class": "vTimeField", "size": "8", **(attrs or {})}
super().__init__(attrs=attrs, format=format)
class AdminTimeWidget(BaseAdminTimeWidget):
template_name = "admin/widgets/time.html"
class AdminSplitDateTime(forms.SplitDateTimeWidget):
"""
A SplitDateTime Widget that has some admin-specific styling.
"""
template_name = "admin/widgets/split_datetime.html"
def __init__(self, attrs=None):
widgets = [BaseAdminDateWidget, BaseAdminTimeWidget]
# Note that we're calling MultiWidget, not SplitDateTimeWidget, because
# we want to define widgets.
forms.MultiWidget.__init__(self, widgets, attrs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context["date_label"] = _("Date:")
context["time_label"] = _("Time:")
for widget in context["widget"]["subwidgets"]:
widget["attrs"]["aria-describedby"] = f"id_{name}_timezone_warning_helptext"
return context
def id_for_label(self, id_):
return id_
class AdminRadioSelect(forms.RadioSelect):
template_name = "admin/widgets/radio.html"
class AdminFileWidget(forms.ClearableFileInput):
template_name = "admin/widgets/clearable_file_input.html"
use_fieldset = True
def url_params_from_lookup_dict(lookups):
"""
Convert the type of lookups specified in a ForeignKey limit_choices_to
attribute to a dictionary of query parameters
"""
params = {}
if lookups and hasattr(lookups, "items"):
for k, v in lookups.items():
if callable(v):
v = v()
if isinstance(v, (tuple, list)):
v = ",".join(str(x) for x in v)
elif isinstance(v, bool):
v = ("0", "1")[v]
else:
v = str(v)
params[k] = v
return params
class ForeignKeyRawIdWidget(forms.TextInput):
"""
A Widget for displaying ForeignKeys in the "raw_id" interface rather than
in a <select> box.
"""
template_name = "admin/widgets/foreign_key_raw_id.html"
def __init__(self, rel, admin_site, attrs=None, using=None):
self.rel = rel
self.admin_site = admin_site
self.db = using
super().__init__(attrs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
rel_to = self.rel.model
if self.admin_site.is_registered(rel_to):
# The related object is registered with the same AdminSite
related_url = reverse(
"admin:%s_%s_changelist"
% (
rel_to._meta.app_label,
rel_to._meta.model_name,
),
current_app=self.admin_site.name,
)
params = self.url_parameters()
if params:
related_url += "?" + urlencode(params)
context["related_url"] = related_url
context["link_title"] = _("Lookup")
# The JavaScript code looks for this class.
css_class = "vForeignKeyRawIdAdminField"
if isinstance(self.rel.get_related_field(), UUIDField):
css_class += " vUUIDField"
context["widget"]["attrs"].setdefault("class", css_class)
else:
context["related_url"] = None
if context["widget"]["value"]:
context["link_label"], context["link_url"] = self.label_and_url_for_value(
value
)
else:
context["link_label"] = None
return context
def base_url_parameters(self):
limit_choices_to = self.rel.limit_choices_to
if callable(limit_choices_to):
limit_choices_to = limit_choices_to()
return url_params_from_lookup_dict(limit_choices_to)
def url_parameters(self):
from django.contrib.admin.views.main import TO_FIELD_VAR
params = self.base_url_parameters()
params.update({TO_FIELD_VAR: self.rel.get_related_field().name})
return params
def label_and_url_for_value(self, value):
key = self.rel.get_related_field().name
try:
obj = self.rel.model._default_manager.using(self.db).get(**{key: value})
except (ValueError, self.rel.model.DoesNotExist, ValidationError):
return "", ""
try:
url = reverse(
"%s:%s_%s_change"
% (
self.admin_site.name,
obj._meta.app_label,
obj._meta.model_name,
),
args=(obj.pk,),
)
except NoReverseMatch:
url = "" # Admin not registered for target model.
return Truncator(obj).words(14), url
class ManyToManyRawIdWidget(ForeignKeyRawIdWidget):
"""
A Widget for displaying ManyToMany ids in the "raw_id" interface rather
than in a <select multiple> box.
"""
template_name = "admin/widgets/many_to_many_raw_id.html"
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
if self.admin_site.is_registered(self.rel.model):
# The related object is registered with the same AdminSite
context["widget"]["attrs"]["class"] = "vManyToManyRawIdAdminField"
return context
def url_parameters(self):
return self.base_url_parameters()
def label_and_url_for_value(self, value):
return "", ""
def value_from_datadict(self, data, files, name):
value = data.get(name)
if value:
return value.split(",")
def format_value(self, value):
return ",".join(str(v) for v in value) if value else ""
class RelatedFieldWidgetWrapper(forms.Widget):
"""
This class is a wrapper to a given widget to add the add icon for the
admin interface.
"""
template_name = "admin/widgets/related_widget_wrapper.html"
def __init__(
self,
widget,
rel,
admin_site,
can_add_related=None,
can_change_related=False,
can_delete_related=False,
can_view_related=False,
):
self.needs_multipart_form = widget.needs_multipart_form
self.attrs = widget.attrs
self.widget = widget
self.rel = rel
# Backwards compatible check for whether a user can add related
# objects.
if can_add_related is None:
can_add_related = admin_site.is_registered(rel.model)
self.can_add_related = can_add_related
if not isinstance(widget, AutocompleteMixin):
self.attrs["data-context"] = "available-source"
# Only single-select Select widgets are supported.
supported = not getattr(
widget, "allow_multiple_selected", False
) and isinstance(widget, Select)
self.can_change_related = supported and can_change_related
# XXX: The deletion UX can be confusing when dealing with cascading
# deletion.
cascade = getattr(rel, "on_delete", None) is CASCADE
self.can_delete_related = supported and not cascade and can_delete_related
self.can_view_related = supported and can_view_related
# To check if the related object is registered with this AdminSite.
self.admin_site = admin_site
self.use_fieldset = True
def __deepcopy__(self, memo):
obj = copy.copy(self)
obj.widget = copy.deepcopy(self.widget, memo)
obj.attrs = self.widget.attrs
memo[id(self)] = obj
return obj
@property
def is_hidden(self):
return self.widget.is_hidden
@property
def media(self):
return self.widget.media
@property
def choices(self):
return self.widget.choices
@choices.setter
def choices(self, value):
self.widget.choices = value
def get_related_url(self, info, action, *args):
return reverse(
"admin:%s_%s_%s" % (*info, action),
current_app=self.admin_site.name,
args=args,
)
def get_context(self, name, value, attrs):
from django.contrib.admin.views.main import IS_POPUP_VAR, TO_FIELD_VAR
rel_opts = self.rel.model._meta
info = (rel_opts.app_label, rel_opts.model_name)
related_field_name = self.rel.get_related_field().name
url_params = "&".join(
"%s=%s" % param
for param in [
(TO_FIELD_VAR, related_field_name),
(IS_POPUP_VAR, 1),
]
)
context = {
"rendered_widget": self.widget.render(name, value, attrs),
"is_hidden": self.is_hidden,
"name": name,
"url_params": url_params,
"model": rel_opts.verbose_name,
"model_name": rel_opts.model_name,
"can_add_related": self.can_add_related,
"can_change_related": self.can_change_related,
"can_delete_related": self.can_delete_related,
"can_view_related": self.can_view_related,
"model_has_limit_choices_to": self.rel.limit_choices_to,
}
if self.can_add_related:
context["add_related_url"] = self.get_related_url(info, "add")
if self.can_delete_related:
context["delete_related_template_url"] = self.get_related_url(
info, "delete", "__fk__"
)
if self.can_view_related or self.can_change_related:
context["view_related_url_params"] = f"{TO_FIELD_VAR}={related_field_name}"
context["change_related_template_url"] = self.get_related_url(
info, "change", "__fk__"
)
return context
def value_from_datadict(self, data, files, name):
return self.widget.value_from_datadict(data, files, name)
def value_omitted_from_data(self, data, files, name):
return self.widget.value_omitted_from_data(data, files, name)
def id_for_label(self, id_):
return self.widget.id_for_label(id_)
class AdminTextareaWidget(forms.Textarea):
def __init__(self, attrs=None):
super().__init__(attrs={"class": "vLargeTextField", **(attrs or {})})
class AdminTextInputWidget(forms.TextInput):
def __init__(self, attrs=None):
super().__init__(attrs={"class": "vTextField", **(attrs or {})})
class AdminEmailInputWidget(forms.EmailInput):
def __init__(self, attrs=None):
super().__init__(attrs={"class": "vTextField", **(attrs or {})})
class AdminURLFieldWidget(forms.URLInput):
template_name = "admin/widgets/url.html"
def __init__(self, attrs=None, validator_class=URLValidator):
super().__init__(attrs={"class": "vURLField", **(attrs or {})})
self.validator = validator_class()
def get_context(self, name, value, attrs):
try:
self.validator(value if value else "")
url_valid = True
except ValidationError:
url_valid = False
context = super().get_context(name, value, attrs)
context["current_label"] = _("Currently:")
context["change_label"] = _("Change:")
context["widget"]["href"] = (
smart_urlquote(context["widget"]["value"]) if url_valid else ""
)
context["url_valid"] = url_valid
return context
class AdminIntegerFieldWidget(forms.NumberInput):
class_name = "vIntegerField"
def __init__(self, attrs=None):
super().__init__(attrs={"class": self.class_name, **(attrs or {})})
class AdminBigIntegerFieldWidget(AdminIntegerFieldWidget):
class_name = "vBigIntegerField"
class AdminUUIDInputWidget(forms.TextInput):
def __init__(self, attrs=None):
super().__init__(attrs={"class": "vUUIDField", **(attrs or {})})
# Mapping of lowercase language codes [returned by Django's get_language()] to
# language codes supported by select2.
# See django/contrib/admin/static/admin/js/vendor/select2/i18n/*
SELECT2_TRANSLATIONS = {
x.lower(): x
for x in [
"ar",
"az",
"bg",
"ca",
"cs",
"da",
"de",
"el",
"en",
"es",
"et",
"eu",
"fa",
"fi",
"fr",
"gl",
"he",
"hi",
"hr",
"hu",
"id",
"is",
"it",
"ja",
"km",
"ko",
"lt",
"lv",
"mk",
"ms",
"nb",
"nl",
"pl",
"pt-BR",
"pt",
"ro",
"ru",
"sk",
"sr-Cyrl",
"sr",
"sv",
"th",
"tr",
"uk",
"vi",
]
}
SELECT2_TRANSLATIONS.update({"zh-hans": "zh-CN", "zh-hant": "zh-TW"})
def get_select2_language():
lang_code = get_language()
supported_code = SELECT2_TRANSLATIONS.get(lang_code)
if supported_code is None and lang_code is not None:
# If 'zh-hant-tw' is not supported, try subsequent language codes i.e.
# 'zh-hant' and 'zh'.
i = None
while (i := lang_code.rfind("-", 0, i)) > -1:
if supported_code := SELECT2_TRANSLATIONS.get(lang_code[:i]):
return supported_code
return supported_code
class AutocompleteMixin:
"""
Select widget mixin that loads options from AutocompleteJsonView via AJAX.
Renders the necessary data attributes for select2 and adds the static form
media.
"""
url_name = "%s:autocomplete"
def __init__(self, field, admin_site, attrs=None, choices=(), using=None):
self.field = field
self.admin_site = admin_site
self.db = using
self.choices = choices
self.attrs = {} if attrs is None else attrs.copy()
self.i18n_name = get_select2_language()
def get_url(self):
return reverse(self.url_name % self.admin_site.name)
def build_attrs(self, base_attrs, extra_attrs=None):
"""
Set select2's AJAX attributes.
Attributes can be set using the html5 data attribute.
Nested attributes require a double dash as per
https://select2.org/configuration/data-attributes#nested-subkey-options
"""
attrs = super().build_attrs(base_attrs, extra_attrs=extra_attrs)
attrs.setdefault("class", "")
attrs.update(
{
"data-ajax--cache": "true",
"data-ajax--delay": 250,
"data-ajax--type": "GET",
"data-ajax--url": self.get_url(),
"data-app-label": self.field.model._meta.app_label,
"data-model-name": self.field.model._meta.model_name,
"data-field-name": self.field.name,
"data-theme": "admin-autocomplete",
"data-allow-clear": json.dumps(not self.is_required),
"data-placeholder": "", # Allows clearing of the input.
"lang": self.i18n_name,
"class": attrs["class"]
+ (" " if attrs["class"] else "")
+ "admin-autocomplete",
}
)
return attrs
def optgroups(self, name, value, attr=None):
"""Return selected options based on the ModelChoiceIterator."""
default = (None, [], 0)
groups = [default]
has_selected = False
selected_choices = {
str(v) for v in value if str(v) not in self.choices.field.empty_values
}
if not self.is_required and not self.allow_multiple_selected:
default[1].append(self.create_option(name, "", "", False, 0))
remote_model_opts = self.field.remote_field.model._meta
to_field_name = getattr(
self.field.remote_field, "field_name", remote_model_opts.pk.attname
)
to_field_name = remote_model_opts.get_field(to_field_name).attname
choices = (
(getattr(obj, to_field_name), self.choices.field.label_from_instance(obj))
for obj in self.choices.queryset.using(self.db).filter(
**{"%s__in" % to_field_name: selected_choices}
)
)
for option_value, option_label in choices:
selected = str(option_value) in value and (
has_selected is False or self.allow_multiple_selected
)
has_selected |= selected
index = len(default[1])
subgroup = default[1]
subgroup.append(
self.create_option(
name, option_value, option_label, selected_choices, index
)
)
return groups
@property
def media(self):
extra = "" if settings.DEBUG else ".min"
i18n_file = (
("admin/js/vendor/select2/i18n/%s.js" % self.i18n_name,)
if self.i18n_name
else ()
)
return forms.Media(
js=(
"admin/js/vendor/jquery/jquery%s.js" % extra,
"admin/js/vendor/select2/select2.full%s.js" % extra,
*i18n_file,
"admin/js/jquery.init.js",
"admin/js/autocomplete.js",
),
css={
"screen": (
"admin/css/vendor/select2/select2%s.css" % extra,
"admin/css/autocomplete.css",
),
},
)
class AutocompleteSelect(AutocompleteMixin, forms.Select):
pass
class AutocompleteSelectMultiple(AutocompleteMixin, forms.SelectMultiple):
pass
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/filters.py | django/contrib/admin/filters.py | """
This encapsulates the logic for displaying filters in the Django admin.
Filters are specified in models with the "list_filter" option.
Each filter subclass knows how to display a filter for a field that passes a
certain test -- e.g. being a DateField or ForeignKey.
"""
import datetime
from django.contrib.admin.exceptions import NotRegistered
from django.contrib.admin.options import IncorrectLookupParameters
from django.contrib.admin.utils import (
build_q_object_from_lookup_parameters,
get_last_value_from_parameters,
get_model_from_relation,
prepare_lookup_value,
reverse_field_path,
)
from django.core.exceptions import ImproperlyConfigured, ValidationError
from django.db import models
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
class ListFilter:
title = None # Human-readable title to appear in the right sidebar.
template = "admin/filter.html"
def __init__(self, request, params, model, model_admin):
self.request = request
# This dictionary will eventually contain the request's query string
# parameters actually used by this filter.
self.used_parameters = {}
if self.title is None:
raise ImproperlyConfigured(
"The list filter '%s' does not specify a 'title'."
% self.__class__.__name__
)
def has_output(self):
"""
Return True if some choices would be output for this filter.
"""
raise NotImplementedError(
"subclasses of ListFilter must provide a has_output() method"
)
def choices(self, changelist):
"""
Return choices ready to be output in the template.
`changelist` is the ChangeList to be displayed.
"""
raise NotImplementedError(
"subclasses of ListFilter must provide a choices() method"
)
def queryset(self, request, queryset):
"""
Return the filtered queryset.
"""
raise NotImplementedError(
"subclasses of ListFilter must provide a queryset() method"
)
def expected_parameters(self):
"""
Return the list of parameter names that are expected from the
request's query string and that will be used by this filter.
"""
raise NotImplementedError(
"subclasses of ListFilter must provide an expected_parameters() method"
)
class FacetsMixin:
def get_facet_counts(self, pk_attname, filtered_qs):
raise NotImplementedError(
"subclasses of FacetsMixin must provide a get_facet_counts() method."
)
def get_facet_queryset(self, changelist):
filtered_qs = changelist.get_queryset(
self.request, exclude_parameters=self.expected_parameters()
)
return filtered_qs.aggregate(
**self.get_facet_counts(changelist.pk_attname, filtered_qs)
)
class SimpleListFilter(FacetsMixin, ListFilter):
# The parameter that should be used in the query string for that filter.
parameter_name = None
def __init__(self, request, params, model, model_admin):
super().__init__(request, params, model, model_admin)
if self.parameter_name is None:
raise ImproperlyConfigured(
"The list filter '%s' does not specify a 'parameter_name'."
% self.__class__.__name__
)
if self.parameter_name in params:
value = params.pop(self.parameter_name)
self.used_parameters[self.parameter_name] = value[-1]
lookup_choices = self.lookups(request, model_admin)
if lookup_choices is None:
lookup_choices = ()
self.lookup_choices = list(lookup_choices)
def has_output(self):
return len(self.lookup_choices) > 0
def value(self):
"""
Return the value (in string format) provided in the request's
query string for this filter, if any, or None if the value wasn't
provided.
"""
return self.used_parameters.get(self.parameter_name)
def lookups(self, request, model_admin):
"""
Must be overridden to return a list of tuples (value, verbose value)
"""
raise NotImplementedError(
"The SimpleListFilter.lookups() method must be overridden to "
"return a list of tuples (value, verbose value)."
)
def expected_parameters(self):
return [self.parameter_name]
def get_facet_counts(self, pk_attname, filtered_qs):
original_value = self.used_parameters.get(self.parameter_name)
counts = {}
for i, choice in enumerate(self.lookup_choices):
self.used_parameters[self.parameter_name] = choice[0]
lookup_qs = self.queryset(self.request, filtered_qs)
if lookup_qs is not None:
counts[f"{i}__c"] = models.Count(
pk_attname,
filter=models.Q(pk__in=lookup_qs),
)
self.used_parameters[self.parameter_name] = original_value
return counts
def choices(self, changelist):
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
yield {
"selected": self.value() is None,
"query_string": changelist.get_query_string(remove=[self.parameter_name]),
"display": _("All"),
}
for i, (lookup, title) in enumerate(self.lookup_choices):
if add_facets:
if (count := facet_counts.get(f"{i}__c", -1)) != -1:
title = f"{title} ({count})"
else:
title = f"{title} (-)"
yield {
"selected": self.value() == str(lookup),
"query_string": changelist.get_query_string(
{self.parameter_name: lookup}
),
"display": title,
}
class FieldListFilter(FacetsMixin, ListFilter):
_field_list_filters = []
_take_priority_index = 0
list_separator = ","
def __init__(self, field, request, params, model, model_admin, field_path):
self.field = field
self.field_path = field_path
self.title = getattr(field, "verbose_name", field_path)
super().__init__(request, params, model, model_admin)
for p in self.expected_parameters():
if p in params:
value = params.pop(p)
self.used_parameters[p] = prepare_lookup_value(
p, value, self.list_separator
)
def has_output(self):
return True
def queryset(self, request, queryset):
try:
q_object = build_q_object_from_lookup_parameters(self.used_parameters)
return queryset.filter(q_object)
except (ValueError, ValidationError) as e:
# Fields may raise a ValueError or ValidationError when converting
# the parameters to the correct type.
raise IncorrectLookupParameters(e)
@classmethod
def register(cls, test, list_filter_class, take_priority=False):
if take_priority:
# This is to allow overriding the default filters for certain types
# of fields with some custom filters. The first found in the list
# is used in priority.
cls._field_list_filters.insert(
cls._take_priority_index, (test, list_filter_class)
)
cls._take_priority_index += 1
else:
cls._field_list_filters.append((test, list_filter_class))
@classmethod
def create(cls, field, request, params, model, model_admin, field_path):
for test, list_filter_class in cls._field_list_filters:
if test(field):
return list_filter_class(
field, request, params, model, model_admin, field_path=field_path
)
class RelatedFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
other_model = get_model_from_relation(field)
self.lookup_kwarg = "%s__%s__exact" % (field_path, field.target_field.name)
self.lookup_kwarg_isnull = "%s__isnull" % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val_isnull = get_last_value_from_parameters(
params, self.lookup_kwarg_isnull
)
super().__init__(field, request, params, model, model_admin, field_path)
self.lookup_choices = self.field_choices(field, request, model_admin)
if hasattr(field, "verbose_name"):
self.lookup_title = field.verbose_name
else:
self.lookup_title = other_model._meta.verbose_name
self.title = self.lookup_title
self.empty_value_display = model_admin.get_empty_value_display()
@property
def include_empty_choice(self):
"""
Return True if a "(None)" choice should be included, which filters
out everything except empty relationships.
"""
return self.field.null or (self.field.is_relation and self.field.many_to_many)
def has_output(self):
if self.include_empty_choice:
extra = 1
else:
extra = 0
return len(self.lookup_choices) + extra > 1
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg_isnull]
def field_admin_ordering(self, field, request, model_admin):
"""
Return the model admin's ordering for related field, if provided.
"""
try:
related_admin = model_admin.admin_site.get_model_admin(
field.remote_field.model
)
except NotRegistered:
return ()
else:
return related_admin.get_ordering(request)
def field_choices(self, field, request, model_admin):
ordering = self.field_admin_ordering(field, request, model_admin)
return field.get_choices(include_blank=False, ordering=ordering)
def get_facet_counts(self, pk_attname, filtered_qs):
counts = {
f"{pk_val}__c": models.Count(
pk_attname, filter=models.Q(**{self.lookup_kwarg: pk_val})
)
for pk_val, _ in self.lookup_choices
}
if self.include_empty_choice:
counts["__c"] = models.Count(
pk_attname, filter=models.Q(**{self.lookup_kwarg_isnull: True})
)
return counts
def choices(self, changelist):
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
yield {
"selected": self.lookup_val is None and not self.lookup_val_isnull,
"query_string": changelist.get_query_string(
remove=[self.lookup_kwarg, self.lookup_kwarg_isnull]
),
"display": _("All"),
}
count = None
for pk_val, val in self.lookup_choices:
if add_facets:
count = facet_counts[f"{pk_val}__c"]
val = f"{val} ({count})"
yield {
"selected": self.lookup_val is not None
and str(pk_val) in self.lookup_val,
"query_string": changelist.get_query_string(
{self.lookup_kwarg: pk_val}, [self.lookup_kwarg_isnull]
),
"display": val,
}
empty_title = self.empty_value_display
if self.include_empty_choice:
if add_facets:
count = facet_counts["__c"]
empty_title = f"{empty_title} ({count})"
yield {
"selected": bool(self.lookup_val_isnull),
"query_string": changelist.get_query_string(
{self.lookup_kwarg_isnull: "True"}, [self.lookup_kwarg]
),
"display": empty_title,
}
FieldListFilter.register(lambda f: f.remote_field, RelatedFieldListFilter)
class BooleanFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = "%s__exact" % field_path
self.lookup_kwarg2 = "%s__isnull" % field_path
self.lookup_val = get_last_value_from_parameters(params, self.lookup_kwarg)
self.lookup_val2 = get_last_value_from_parameters(params, self.lookup_kwarg2)
super().__init__(field, request, params, model, model_admin, field_path)
if (
self.used_parameters
and self.lookup_kwarg in self.used_parameters
and self.used_parameters[self.lookup_kwarg] in ("1", "0")
):
self.used_parameters[self.lookup_kwarg] = bool(
int(self.used_parameters[self.lookup_kwarg])
)
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg2]
def get_facet_counts(self, pk_attname, filtered_qs):
return {
"true__c": models.Count(
pk_attname, filter=models.Q(**{self.field_path: True})
),
"false__c": models.Count(
pk_attname, filter=models.Q(**{self.field_path: False})
),
"null__c": models.Count(
pk_attname, filter=models.Q(**{self.lookup_kwarg2: True})
),
}
def choices(self, changelist):
field_choices = dict(self.field.flatchoices)
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
for lookup, title, count_field in (
(None, _("All"), None),
("1", field_choices.get(True, _("Yes")), "true__c"),
("0", field_choices.get(False, _("No")), "false__c"),
):
if add_facets:
if count_field is not None:
count = facet_counts[count_field]
title = f"{title} ({count})"
yield {
"selected": self.lookup_val == lookup and not self.lookup_val2,
"query_string": changelist.get_query_string(
{self.lookup_kwarg: lookup}, [self.lookup_kwarg2]
),
"display": title,
}
if self.field.null:
display = field_choices.get(None, _("Unknown"))
if add_facets:
count = facet_counts["null__c"]
display = f"{display} ({count})"
yield {
"selected": self.lookup_val2 == "True",
"query_string": changelist.get_query_string(
{self.lookup_kwarg2: "True"}, [self.lookup_kwarg]
),
"display": display,
}
FieldListFilter.register(
lambda f: isinstance(f, models.BooleanField), BooleanFieldListFilter
)
class ChoicesFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = "%s__exact" % field_path
self.lookup_kwarg_isnull = "%s__isnull" % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val_isnull = get_last_value_from_parameters(
params, self.lookup_kwarg_isnull
)
super().__init__(field, request, params, model, model_admin, field_path)
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg_isnull]
def get_facet_counts(self, pk_attname, filtered_qs):
return {
f"{i}__c": models.Count(
pk_attname,
filter=models.Q(
(self.lookup_kwarg, value)
if value is not None
else (self.lookup_kwarg_isnull, True)
),
)
for i, (value, _) in enumerate(self.field.flatchoices)
}
def choices(self, changelist):
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
yield {
"selected": self.lookup_val is None,
"query_string": changelist.get_query_string(
remove=[self.lookup_kwarg, self.lookup_kwarg_isnull]
),
"display": _("All"),
}
none_title = ""
for i, (lookup, title) in enumerate(self.field.flatchoices):
if add_facets:
count = facet_counts[f"{i}__c"]
title = f"{title} ({count})"
if lookup is None:
none_title = title
continue
yield {
"selected": self.lookup_val is not None
and str(lookup) in self.lookup_val,
"query_string": changelist.get_query_string(
{self.lookup_kwarg: lookup}, [self.lookup_kwarg_isnull]
),
"display": title,
}
if none_title:
yield {
"selected": bool(self.lookup_val_isnull),
"query_string": changelist.get_query_string(
{self.lookup_kwarg_isnull: "True"}, [self.lookup_kwarg]
),
"display": none_title,
}
FieldListFilter.register(lambda f: bool(f.choices), ChoicesFieldListFilter)
class DateFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.field_generic = "%s__" % field_path
self.date_params = {
k: v[-1] for k, v in params.items() if k.startswith(self.field_generic)
}
now = timezone.now()
# When time zone support is enabled, convert "now" to the user's time
# zone so Django's definition of "Today" matches what the user expects.
if timezone.is_aware(now):
now = timezone.localtime(now)
if isinstance(field, models.DateTimeField):
today = now.replace(hour=0, minute=0, second=0, microsecond=0)
else: # field is a models.DateField
today = now.date()
tomorrow = today + datetime.timedelta(days=1)
if today.month == 12:
next_month = today.replace(year=today.year + 1, month=1, day=1)
else:
next_month = today.replace(month=today.month + 1, day=1)
next_year = today.replace(year=today.year + 1, month=1, day=1)
self.lookup_kwarg_since = "%s__gte" % field_path
self.lookup_kwarg_until = "%s__lt" % field_path
self.links = (
(_("Any date"), {}),
(
_("Today"),
{
self.lookup_kwarg_since: today,
self.lookup_kwarg_until: tomorrow,
},
),
(
_("Past 7 days"),
{
self.lookup_kwarg_since: today - datetime.timedelta(days=7),
self.lookup_kwarg_until: tomorrow,
},
),
(
_("This month"),
{
self.lookup_kwarg_since: today.replace(day=1),
self.lookup_kwarg_until: next_month,
},
),
(
_("This year"),
{
self.lookup_kwarg_since: today.replace(month=1, day=1),
self.lookup_kwarg_until: next_year,
},
),
)
if field.null:
self.lookup_kwarg_isnull = "%s__isnull" % field_path
self.links += (
(_("No date"), {self.field_generic + "isnull": True}),
(_("Has date"), {self.field_generic + "isnull": False}),
)
super().__init__(field, request, params, model, model_admin, field_path)
def expected_parameters(self):
params = [self.lookup_kwarg_since, self.lookup_kwarg_until]
if self.field.null:
params.append(self.lookup_kwarg_isnull)
return params
def get_facet_counts(self, pk_attname, filtered_qs):
return {
f"{i}__c": models.Count(pk_attname, filter=models.Q(**param_dict))
for i, (_, param_dict) in enumerate(self.links)
}
def choices(self, changelist):
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
for i, (title, param_dict) in enumerate(self.links):
param_dict_str = {key: str(value) for key, value in param_dict.items()}
if add_facets:
count = facet_counts[f"{i}__c"]
title = f"{title} ({count})"
yield {
"selected": self.date_params == param_dict_str,
"query_string": changelist.get_query_string(
param_dict_str, [self.field_generic]
),
"display": title,
}
FieldListFilter.register(lambda f: isinstance(f, models.DateField), DateFieldListFilter)
# This should be registered last, because it's a last resort. For example,
# if a field is eligible to use the BooleanFieldListFilter, that'd be much
# more appropriate, and the AllValuesFieldListFilter won't get used for it.
class AllValuesFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = field_path
self.lookup_kwarg_isnull = "%s__isnull" % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val_isnull = get_last_value_from_parameters(
params, self.lookup_kwarg_isnull
)
self.empty_value_display = model_admin.get_empty_value_display()
parent_model, reverse_path = reverse_field_path(model, field_path)
# Obey parent ModelAdmin queryset when deciding which options to show
if model == parent_model:
queryset = model_admin.get_queryset(request)
else:
queryset = parent_model._default_manager.all()
self.lookup_choices = (
queryset.distinct().order_by(field.name).values_list(field.name, flat=True)
)
super().__init__(field, request, params, model, model_admin, field_path)
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg_isnull]
def get_facet_counts(self, pk_attname, filtered_qs):
return {
f"{i}__c": models.Count(
pk_attname,
filter=models.Q(
(self.lookup_kwarg, value)
if value is not None
else (self.lookup_kwarg_isnull, True)
),
)
for i, value in enumerate(self.lookup_choices)
}
def choices(self, changelist):
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
yield {
"selected": self.lookup_val is None and self.lookup_val_isnull is None,
"query_string": changelist.get_query_string(
remove=[self.lookup_kwarg, self.lookup_kwarg_isnull]
),
"display": _("All"),
}
include_none = False
count = None
empty_title = self.empty_value_display
for i, val in enumerate(self.lookup_choices):
if add_facets:
count = facet_counts[f"{i}__c"]
if val is None:
include_none = True
empty_title = f"{empty_title} ({count})" if add_facets else empty_title
continue
val = str(val)
yield {
"selected": self.lookup_val is not None and val in self.lookup_val,
"query_string": changelist.get_query_string(
{self.lookup_kwarg: val}, [self.lookup_kwarg_isnull]
),
"display": f"{val} ({count})" if add_facets else val,
}
if include_none:
yield {
"selected": bool(self.lookup_val_isnull),
"query_string": changelist.get_query_string(
{self.lookup_kwarg_isnull: "True"}, [self.lookup_kwarg]
),
"display": empty_title,
}
FieldListFilter.register(lambda f: True, AllValuesFieldListFilter)
class RelatedOnlyFieldListFilter(RelatedFieldListFilter):
def field_choices(self, field, request, model_admin):
pk_qs = (
model_admin.get_queryset(request)
.distinct()
.values_list("%s__pk" % self.field_path, flat=True)
)
ordering = self.field_admin_ordering(field, request, model_admin)
return field.get_choices(
include_blank=False, limit_choices_to={"pk__in": pk_qs}, ordering=ordering
)
class EmptyFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
if not field.empty_strings_allowed and not field.null:
raise ImproperlyConfigured(
"The list filter '%s' cannot be used with field '%s' which "
"doesn't allow empty strings and nulls."
% (
self.__class__.__name__,
field.name,
)
)
self.lookup_kwarg = "%s__isempty" % field_path
self.lookup_val = get_last_value_from_parameters(params, self.lookup_kwarg)
super().__init__(field, request, params, model, model_admin, field_path)
def get_lookup_condition(self):
lookup_conditions = []
if self.field.empty_strings_allowed:
lookup_conditions.append((self.field_path, ""))
if self.field.null:
lookup_conditions.append((f"{self.field_path}__isnull", True))
return models.Q.create(lookup_conditions, connector=models.Q.OR)
def queryset(self, request, queryset):
if self.lookup_kwarg not in self.used_parameters:
return queryset
if self.lookup_val not in ("0", "1"):
raise IncorrectLookupParameters
lookup_condition = self.get_lookup_condition()
if self.lookup_val == "1":
return queryset.filter(lookup_condition)
return queryset.exclude(lookup_condition)
def expected_parameters(self):
return [self.lookup_kwarg]
def get_facet_counts(self, pk_attname, filtered_qs):
lookup_condition = self.get_lookup_condition()
return {
"empty__c": models.Count(pk_attname, filter=lookup_condition),
"not_empty__c": models.Count(pk_attname, filter=~lookup_condition),
}
def choices(self, changelist):
add_facets = changelist.add_facets
facet_counts = self.get_facet_queryset(changelist) if add_facets else None
for lookup, title, count_field in (
(None, _("All"), None),
("1", _("Empty"), "empty__c"),
("0", _("Not empty"), "not_empty__c"),
):
if add_facets:
if count_field is not None:
count = facet_counts[count_field]
title = f"{title} ({count})"
yield {
"selected": self.lookup_val == lookup,
"query_string": changelist.get_query_string(
{self.lookup_kwarg: lookup}
),
"display": title,
}
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/helpers.py | django/contrib/admin/helpers.py | import json
from django import forms
from django.contrib.admin.utils import (
display_for_field,
flatten_fieldsets,
help_text_for_field,
label_for_field,
lookup_field,
quote,
)
from django.core.exceptions import ObjectDoesNotExist
from django.db.models.fields.related import (
ForeignObjectRel,
ManyToManyRel,
OneToOneField,
)
from django.forms.utils import flatatt
from django.template.defaultfilters import capfirst, linebreaksbr
from django.urls import NoReverseMatch, reverse
from django.utils.functional import cached_property
from django.utils.html import conditional_escape, format_html
from django.utils.safestring import mark_safe
from django.utils.translation import gettext
from django.utils.translation import gettext_lazy as _
ACTION_CHECKBOX_NAME = "_selected_action"
class ActionForm(forms.Form):
action = forms.ChoiceField(label=_("Action:"))
select_across = forms.BooleanField(
label="",
required=False,
initial=0,
widget=forms.HiddenInput({"class": "select-across"}),
)
class AdminForm:
def __init__(
self,
form,
fieldsets,
prepopulated_fields,
readonly_fields=None,
model_admin=None,
):
self.form, self.fieldsets = form, fieldsets
self.prepopulated_fields = [
{"field": form[field_name], "dependencies": [form[f] for f in dependencies]}
for field_name, dependencies in prepopulated_fields.items()
]
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
def __repr__(self):
return (
f"<{self.__class__.__qualname__}: "
f"form={self.form.__class__.__qualname__} "
f"fieldsets={self.fieldsets!r}>"
)
def __iter__(self):
for name, options in self.fieldsets:
yield Fieldset(
self.form,
name,
readonly_fields=self.readonly_fields,
model_admin=self.model_admin,
**options,
)
@property
def errors(self):
return self.form.errors
@property
def non_field_errors(self):
return self.form.non_field_errors
@property
def fields(self):
return self.form.fields
@property
def is_bound(self):
return self.form.is_bound
@property
def media(self):
media = self.form.media
for fs in self:
media += fs.media
return media
class Fieldset:
def __init__(
self,
form,
name=None,
readonly_fields=(),
fields=(),
classes=(),
description=None,
model_admin=None,
):
self.form = form
self.name, self.fields = name, fields
self.classes = " ".join(classes)
self.description = description
self.model_admin = model_admin
self.readonly_fields = readonly_fields
@property
def media(self):
return forms.Media()
@cached_property
def is_collapsible(self):
if any(field in self.fields for field in self.form.errors):
return False
return "collapse" in self.classes
def __iter__(self):
for field in self.fields:
yield Fieldline(
self.form, field, self.readonly_fields, model_admin=self.model_admin
)
class Fieldline:
def __init__(self, form, field, readonly_fields=None, model_admin=None):
self.form = form # A django.forms.Form instance
if not hasattr(field, "__iter__") or isinstance(field, str):
self.fields = [field]
else:
self.fields = field
self.has_visible_field = not all(
field in self.form.fields and self.form.fields[field].widget.is_hidden
for field in self.fields
)
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
def __iter__(self):
for i, field in enumerate(self.fields):
if field in self.readonly_fields:
yield AdminReadonlyField(
self.form, field, is_first=(i == 0), model_admin=self.model_admin
)
else:
yield AdminField(self.form, field, is_first=(i == 0))
def errors(self):
return mark_safe(
"\n".join(
self.form[f].errors.as_ul()
for f in self.fields
if f not in self.readonly_fields
).strip("\n")
)
class AdminField:
def __init__(self, form, field, is_first):
self.field = form[field] # A django.forms.BoundField instance
self.is_first = is_first # Whether this field is first on the line
self.is_checkbox = isinstance(self.field.field.widget, forms.CheckboxInput)
self.is_readonly = False
self.is_fieldset = self.field.field.widget.use_fieldset
def label_tag(self):
classes = []
contents = conditional_escape(self.field.label)
if self.is_checkbox:
classes.append("vCheckboxLabel")
if self.field.field.required:
classes.append("required")
if not self.is_first:
classes.append("inline")
attrs = {"class": " ".join(classes)} if classes else {}
tag = "legend" if self.is_fieldset else None
# checkboxes should not have a label suffix as the checkbox appears
# to the left of the label.
return self.field.label_tag(
contents=mark_safe(contents),
attrs=attrs,
label_suffix="" if self.is_checkbox else None,
tag=tag,
)
def errors(self):
return mark_safe(self.field.errors.as_ul())
class AdminReadonlyField:
def __init__(self, form, field, is_first, model_admin=None):
# Make self.field look a little bit like a field. This means that
# {{ field.name }} must be a useful class name to identify the field.
# For convenience, store other field-related data here too.
if callable(field):
class_name = field.__name__ if field.__name__ != "<lambda>" else ""
else:
class_name = field
if form._meta.labels and class_name in form._meta.labels:
label = form._meta.labels[class_name]
else:
label = label_for_field(field, form._meta.model, model_admin, form=form)
if form._meta.help_texts and class_name in form._meta.help_texts:
help_text = form._meta.help_texts[class_name]
else:
help_text = help_text_for_field(class_name, form._meta.model)
if field in form.fields:
is_hidden = form.fields[field].widget.is_hidden
else:
is_hidden = False
self.field = {
"name": class_name,
"label": label,
"help_text": help_text,
"field": field,
"is_hidden": is_hidden,
}
self.form = form
self.model_admin = model_admin
self.is_first = is_first
self.is_checkbox = False
self.is_readonly = True
self.empty_value_display = model_admin.get_empty_value_display()
def label_tag(self):
attrs = {}
if not self.is_first:
attrs["class"] = "inline"
label = self.field["label"]
return format_html(
"<label{}>{}{}</label>",
flatatt(attrs),
capfirst(label),
self.form.label_suffix,
)
def get_admin_url(self, remote_field, remote_obj):
url_name = "admin:%s_%s_change" % (
remote_field.model._meta.app_label,
remote_field.model._meta.model_name,
)
try:
url = reverse(
url_name,
args=[quote(remote_obj.pk)],
current_app=self.model_admin.admin_site.name,
)
return format_html('<a href="{}">{}</a>', url, remote_obj)
except NoReverseMatch:
return str(remote_obj)
def contents(self):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
field, obj, model_admin = (
self.field["field"],
self.form.instance,
self.model_admin,
)
try:
f, attr, value = lookup_field(field, obj, model_admin)
except (AttributeError, ValueError, ObjectDoesNotExist):
result_repr = self.empty_value_display
else:
if f is None:
if getattr(attr, "boolean", False):
result_repr = _boolean_icon(value)
else:
if hasattr(value, "__html__"):
result_repr = value
else:
result_repr = linebreaksbr(value)
else:
if isinstance(f.remote_field, ManyToManyRel) and value is not None:
result_repr = ", ".join(map(str, value.all()))
elif (
isinstance(f.remote_field, (ForeignObjectRel, OneToOneField))
and value is not None
):
result_repr = self.get_admin_url(f.remote_field, value)
else:
result_repr = display_for_field(value, f, self.empty_value_display)
result_repr = linebreaksbr(result_repr)
return conditional_escape(result_repr)
class InlineAdminFormSet:
"""
A wrapper around an inline formset for use in the admin system.
"""
def __init__(
self,
inline,
formset,
fieldsets,
prepopulated_fields=None,
readonly_fields=None,
model_admin=None,
has_add_permission=True,
has_change_permission=True,
has_delete_permission=True,
has_view_permission=True,
):
self.opts = inline
self.formset = formset
self.fieldsets = fieldsets
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
if prepopulated_fields is None:
prepopulated_fields = {}
self.prepopulated_fields = prepopulated_fields
self.classes = " ".join(inline.classes) if inline.classes else ""
self.has_add_permission = has_add_permission
self.has_change_permission = has_change_permission
self.has_delete_permission = has_delete_permission
self.has_view_permission = has_view_permission
def __iter__(self):
if self.has_change_permission:
readonly_fields_for_editing = self.readonly_fields
else:
readonly_fields_for_editing = self.readonly_fields + flatten_fieldsets(
self.fieldsets
)
for form, original in zip(
self.formset.initial_forms, self.formset.get_queryset()
):
view_on_site_url = self.opts.get_view_on_site_url(original)
yield InlineAdminForm(
self.formset,
form,
self.fieldsets,
self.prepopulated_fields,
original,
readonly_fields_for_editing,
model_admin=self.opts,
view_on_site_url=view_on_site_url,
)
for form in self.formset.extra_forms:
yield InlineAdminForm(
self.formset,
form,
self.fieldsets,
self.prepopulated_fields,
None,
self.readonly_fields,
model_admin=self.opts,
)
if self.has_add_permission:
yield InlineAdminForm(
self.formset,
self.formset.empty_form,
self.fieldsets,
self.prepopulated_fields,
None,
self.readonly_fields,
model_admin=self.opts,
)
def fields(self):
fk = getattr(self.formset, "fk", None)
empty_form = self.formset.empty_form
meta_labels = empty_form._meta.labels or {}
meta_help_texts = empty_form._meta.help_texts or {}
for i, field_name in enumerate(flatten_fieldsets(self.fieldsets)):
if fk and fk.name == field_name:
continue
if not self.has_change_permission or field_name in self.readonly_fields:
form_field = empty_form.fields.get(field_name)
widget_is_hidden = False
if form_field is not None:
widget_is_hidden = form_field.widget.is_hidden
yield {
"name": field_name,
"label": meta_labels.get(field_name)
or label_for_field(
field_name,
self.opts.model,
self.opts,
form=empty_form,
),
"widget": {"is_hidden": widget_is_hidden},
"required": False,
"help_text": meta_help_texts.get(field_name)
or help_text_for_field(field_name, self.opts.model),
}
else:
form_field = empty_form.fields[field_name]
label = form_field.label
if label is None:
label = label_for_field(
field_name, self.opts.model, self.opts, form=empty_form
)
yield {
"name": field_name,
"label": label,
"widget": form_field.widget,
"required": form_field.required,
"help_text": form_field.help_text,
}
def inline_formset_data(self):
verbose_name = self.opts.verbose_name
return json.dumps(
{
"name": "#%s" % self.formset.prefix,
"options": {
"prefix": self.formset.prefix,
"addText": gettext("Add another %(verbose_name)s")
% {
"verbose_name": capfirst(verbose_name),
},
"deleteText": gettext("Remove"),
},
}
)
@property
def forms(self):
return self.formset.forms
@cached_property
def is_collapsible(self):
if any(self.formset.errors):
return False
return "collapse" in self.classes
def non_form_errors(self):
return self.formset.non_form_errors()
@property
def is_bound(self):
return self.formset.is_bound
@property
def total_form_count(self):
return self.formset.total_form_count
@property
def media(self):
media = self.opts.media + self.formset.media
for fs in self:
media += fs.media
return media
class InlineAdminForm(AdminForm):
"""
A wrapper around an inline form for use in the admin system.
"""
def __init__(
self,
formset,
form,
fieldsets,
prepopulated_fields,
original,
readonly_fields=None,
model_admin=None,
view_on_site_url=None,
):
self.formset = formset
self.model_admin = model_admin
self.original = original
self.show_url = original and view_on_site_url is not None
self.absolute_url = view_on_site_url
super().__init__(
form, fieldsets, prepopulated_fields, readonly_fields, model_admin
)
def __iter__(self):
for name, options in self.fieldsets:
yield InlineFieldset(
self.formset,
self.form,
name,
self.readonly_fields,
model_admin=self.model_admin,
**options,
)
def needs_explicit_pk_field(self):
return (
# Auto fields are editable, so check for auto or non-editable pk.
self.form._meta.model._meta.auto_field
or not self.form._meta.model._meta.pk.editable
# The pk can be editable, but excluded from the inline.
or (
self.form._meta.exclude
and self.form._meta.model._meta.pk.name in self.form._meta.exclude
)
or
# Also search any parents for an auto field. (The pk info is
# propagated to child models so that does not need to be checked
# in parents.)
any(
parent._meta.auto_field or not parent._meta.model._meta.pk.editable
for parent in self.form._meta.model._meta.all_parents
)
)
def pk_field(self):
return AdminField(self.form, self.formset._pk_field.name, False)
def fk_field(self):
fk = getattr(self.formset, "fk", None)
if fk:
return AdminField(self.form, fk.name, False)
else:
return ""
def deletion_field(self):
from django.forms.formsets import DELETION_FIELD_NAME
return AdminField(self.form, DELETION_FIELD_NAME, False)
class InlineFieldset(Fieldset):
def __init__(self, formset, *args, **kwargs):
self.formset = formset
super().__init__(*args, **kwargs)
def __iter__(self):
fk = getattr(self.formset, "fk", None)
for field in self.fields:
if not fk or fk.name != field:
yield Fieldline(
self.form, field, self.readonly_fields, model_admin=self.model_admin
)
class AdminErrorList(forms.utils.ErrorList):
"""Store errors for the form/formsets in an add/change view."""
def __init__(self, form, inline_formsets):
super().__init__()
if form.is_bound:
self.extend(form.errors.values())
for inline_formset in inline_formsets:
self.extend(inline_formset.non_form_errors())
for errors_in_inline_form in inline_formset.errors:
self.extend(errors_in_inline_form.values())
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/utils.py | django/contrib/admin/utils.py | import datetime
import decimal
import json
from collections import defaultdict
from functools import reduce
from operator import or_
from django.contrib.auth import get_user_model
from django.contrib.auth.templatetags.auth import render_password_as_hash
from django.core.exceptions import FieldDoesNotExist
from django.core.validators import EMPTY_VALUES
from django.db import models, router
from django.db.models.constants import LOOKUP_SEP
from django.db.models.deletion import Collector
from django.forms.utils import pretty_name
from django.urls import NoReverseMatch, reverse
from django.utils import formats, timezone
from django.utils.hashable import make_hashable
from django.utils.html import format_html
from django.utils.regex_helper import _lazy_re_compile
from django.utils.text import capfirst
from django.utils.translation import ngettext
from django.utils.translation import override as translation_override
QUOTE_MAP = {i: "_%02X" % i for i in b'":/_#?;@&=+$,"[]<>%\n\\'}
UNQUOTE_MAP = {v: chr(k) for k, v in QUOTE_MAP.items()}
UNQUOTE_RE = _lazy_re_compile("_(?:%s)" % "|".join([x[1:] for x in UNQUOTE_MAP]))
class FieldIsAForeignKeyColumnName(Exception):
"""A field is a foreign key attname, i.e. <FK>_id."""
pass
def lookup_spawns_duplicates(opts, lookup_path):
"""
Return True if the given lookup path spawns duplicates.
"""
lookup_fields = lookup_path.split(LOOKUP_SEP)
# Go through the fields (following all relations) and look for an m2m.
for field_name in lookup_fields:
if field_name == "pk":
field_name = opts.pk.name
try:
field = opts.get_field(field_name)
except FieldDoesNotExist:
# Ignore query lookups.
continue
else:
if hasattr(field, "path_infos"):
# This field is a relation; update opts to follow the relation.
path_info = field.path_infos
opts = path_info[-1].to_opts
if any(path.m2m for path in path_info):
# This field is a m2m relation so duplicates must be
# handled.
return True
return False
def get_last_value_from_parameters(parameters, key):
value = parameters.get(key)
return value[-1] if isinstance(value, list) else value
def prepare_lookup_value(key, value, separator=","):
"""
Return a lookup value prepared to be used in queryset filtering.
"""
if isinstance(value, list):
return [prepare_lookup_value(key, v, separator=separator) for v in value]
# if key ends with __in, split parameter into separate values
if key.endswith("__in"):
value = value.split(separator)
# if key ends with __isnull, special case '' and the string literals
# 'false' and '0'
elif key.endswith("__isnull"):
value = value.lower() not in ("", "false", "0")
return value
def build_q_object_from_lookup_parameters(parameters):
q_object = models.Q()
for param, param_item_list in parameters.items():
q_object &= reduce(or_, (models.Q((param, item)) for item in param_item_list))
return q_object
def quote(s):
"""
Ensure that primary key values do not confuse the admin URLs by escaping
any '/', '_' and ':' and similarly problematic characters.
Similar to urllib.parse.quote(), except that the quoting is slightly
different so that it doesn't get automatically unquoted by the web browser.
"""
return s.translate(QUOTE_MAP) if isinstance(s, str) else s
def unquote(s):
"""Undo the effects of quote()."""
return UNQUOTE_RE.sub(lambda m: UNQUOTE_MAP[m[0]], s)
def flatten(fields):
"""
Return a list which is a single level of flattening of the original list.
"""
flat = []
for field in fields:
if isinstance(field, (list, tuple)):
flat.extend(field)
else:
flat.append(field)
return flat
def flatten_fieldsets(fieldsets):
"""Return a list of field names from an admin fieldsets structure."""
field_names = []
for name, opts in fieldsets:
field_names.extend(flatten(opts["fields"]))
return field_names
def get_deleted_objects(objs, request, admin_site):
"""
Find all objects related to ``objs`` that should also be deleted. ``objs``
must be a homogeneous iterable of objects (e.g. a QuerySet).
Return a nested list of strings suitable for display in the
template with the ``unordered_list`` filter.
"""
try:
obj = objs[0]
except IndexError:
return [], {}, set(), []
else:
using = router.db_for_write(obj._meta.model)
collector = NestedObjects(using=using, origin=objs)
collector.collect(objs)
perms_needed = set()
def format_callback(obj):
model = obj.__class__
opts = obj._meta
no_edit_link = "%s: %s" % (capfirst(opts.verbose_name), obj)
if admin_site.is_registered(model):
if not admin_site.get_model_admin(model).has_delete_permission(
request, obj
):
perms_needed.add(opts.verbose_name)
try:
admin_url = reverse(
"%s:%s_%s_change"
% (admin_site.name, opts.app_label, opts.model_name),
None,
(quote(obj.pk),),
)
except NoReverseMatch:
# Change url doesn't exist -- don't display link to edit
return no_edit_link
# Display a link to the admin page.
return format_html(
'{}: <a href="{}">{}</a>', capfirst(opts.verbose_name), admin_url, obj
)
else:
# Don't display link to edit, because it either has no
# admin or is edited inline.
return no_edit_link
to_delete = collector.nested(format_callback)
protected = [format_callback(obj) for obj in collector.protected]
model_count = {
model._meta.verbose_name_plural: len(objs)
for model, objs in collector.model_objs.items()
}
return to_delete, model_count, perms_needed, protected
class NestedObjects(Collector):
def __init__(self, *args, force_collection=True, **kwargs):
super().__init__(*args, force_collection=force_collection, **kwargs)
self.edges = {} # {from_instance: [to_instances]}
self.protected = set()
self.model_objs = defaultdict(set)
def add_edge(self, source, target):
self.edges.setdefault(source, []).append(target)
def collect(self, objs, source=None, source_attr=None, **kwargs):
for obj in objs:
if source_attr and not source_attr.endswith("+"):
related_name = source_attr % {
"class": source._meta.model_name,
"app_label": source._meta.app_label,
}
self.add_edge(getattr(obj, related_name), obj)
else:
self.add_edge(None, obj)
self.model_objs[obj._meta.model].add(obj)
try:
return super().collect(objs, source_attr=source_attr, **kwargs)
except models.ProtectedError as e:
self.protected.update(e.protected_objects)
except models.RestrictedError as e:
self.protected.update(e.restricted_objects)
def related_objects(self, related_model, related_fields, objs):
qs = super().related_objects(related_model, related_fields, objs)
return qs.select_related(
*[related_field.name for related_field in related_fields]
)
def _nested(self, obj, seen, format_callback):
if obj in seen:
return []
seen.add(obj)
children = []
for child in self.edges.get(obj, ()):
children.extend(self._nested(child, seen, format_callback))
if format_callback:
ret = [format_callback(obj)]
else:
ret = [obj]
if children:
ret.append(children)
return ret
def nested(self, format_callback=None):
"""
Return the graph as a nested list.
"""
seen = set()
roots = []
for root in self.edges.get(None, ()):
roots.extend(self._nested(root, seen, format_callback))
return roots
def model_format_dict(obj):
"""
Return a `dict` with keys 'verbose_name' and 'verbose_name_plural',
typically for use with string formatting.
`obj` may be a `Model` instance, `Model` subclass, or `QuerySet` instance.
"""
if isinstance(obj, (models.Model, models.base.ModelBase)):
opts = obj._meta
elif isinstance(obj, models.query.QuerySet):
opts = obj.model._meta
else:
opts = obj
return {
"verbose_name": opts.verbose_name,
"verbose_name_plural": opts.verbose_name_plural,
}
def model_ngettext(obj, n=None):
"""
Return the appropriate `verbose_name` or `verbose_name_plural` value for
`obj` depending on the count `n`.
`obj` may be a `Model` instance, `Model` subclass, or `QuerySet` instance.
If `obj` is a `QuerySet` instance, `n` is optional and the length of the
`QuerySet` is used.
"""
if isinstance(obj, models.query.QuerySet):
if n is None:
n = obj.count()
obj = obj.model
d = model_format_dict(obj)
singular, plural = d["verbose_name"], d["verbose_name_plural"]
return ngettext(singular, plural, n or 0)
def lookup_field(name, obj, model_admin=None):
opts = obj._meta
try:
f = _get_non_gfk_field(opts, name)
except (FieldDoesNotExist, FieldIsAForeignKeyColumnName):
# For non-regular field values, the value is either a method,
# property, related field, or returned via a callable.
if callable(name):
attr = name
value = attr(obj)
elif hasattr(model_admin, name) and name != "__str__":
attr = getattr(model_admin, name)
value = attr(obj)
else:
sentinel = object()
attr = getattr(obj, name, sentinel)
if callable(attr):
value = attr()
else:
if attr is sentinel:
attr = obj
for part in name.split(LOOKUP_SEP):
attr = getattr(attr, part, sentinel)
if attr is sentinel:
return None, None, None
value = attr
if hasattr(model_admin, "model") and hasattr(model_admin.model, name):
attr = getattr(model_admin.model, name)
f = None
else:
attr = None
value = getattr(obj, name)
return f, attr, value
def _get_non_gfk_field(opts, name):
"""
For historical reasons, the admin app relies on GenericForeignKeys as being
"not found" by get_field(). This could likely be cleaned up.
Reverse relations should also be excluded as these aren't attributes of the
model (rather something like `foo_set`).
"""
field = opts.get_field(name)
if (
field.is_relation
and
# Generic foreign keys OR reverse relations
((field.many_to_one and not field.related_model) or field.one_to_many)
):
raise FieldDoesNotExist()
# Avoid coercing <FK>_id fields to FK
if (
field.is_relation
and not field.many_to_many
and hasattr(field, "attname")
and field.attname == name
):
raise FieldIsAForeignKeyColumnName()
return field
def label_for_field(name, model, model_admin=None, return_attr=False, form=None):
"""
Return a sensible label for a field name. The name can be a callable,
property (but not created with @property decorator), or the name of an
object's attribute, as well as a model field, including across related
objects. If return_attr is True, also return the resolved attribute
(which could be a callable). This will be None if (and only if) the name
refers to a field.
"""
attr = None
try:
field = _get_non_gfk_field(model._meta, name)
try:
label = field.verbose_name
except AttributeError:
# field is likely a ForeignObjectRel
label = field.related_model._meta.verbose_name
except FieldDoesNotExist:
if name == "__str__":
label = str(model._meta.verbose_name)
attr = str
else:
if callable(name):
attr = name
elif hasattr(model_admin, name):
attr = getattr(model_admin, name)
elif hasattr(model, name):
attr = getattr(model, name)
elif form and name in form.fields:
attr = form.fields[name]
else:
try:
attr = get_fields_from_path(model, name)[-1]
except (FieldDoesNotExist, NotRelationField):
message = f"Unable to lookup '{name}' on {model._meta.object_name}"
if model_admin:
message += f" or {model_admin.__class__.__name__}"
if form:
message += f" or {form.__class__.__name__}"
raise AttributeError(message)
if hasattr(attr, "short_description"):
label = attr.short_description
elif (
isinstance(attr, property)
and hasattr(attr, "fget")
and hasattr(attr.fget, "short_description")
):
label = attr.fget.short_description
elif callable(attr):
if attr.__name__ == "<lambda>":
label = "--"
else:
label = pretty_name(attr.__name__)
else:
label = pretty_name(name)
except FieldIsAForeignKeyColumnName:
label = pretty_name(name)
attr = name
if return_attr:
return (label, attr)
else:
return label
def help_text_for_field(name, model):
help_text = ""
try:
field = _get_non_gfk_field(model._meta, name)
except (FieldDoesNotExist, FieldIsAForeignKeyColumnName):
pass
else:
if hasattr(field, "help_text"):
help_text = field.help_text
return help_text
def display_for_field(value, field, empty_value_display, avoid_link=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if field.name == "password" and field.model == get_user_model():
return render_password_as_hash(value)
elif getattr(field, "flatchoices", None):
try:
return dict(field.flatchoices).get(value, empty_value_display)
except TypeError:
# Allow list-like choices.
flatchoices = make_hashable(field.flatchoices)
value = make_hashable(value)
return dict(flatchoices).get(value, empty_value_display)
# BooleanField needs special-case null-handling, so it comes before the
# general null test.
elif isinstance(field, models.BooleanField):
return _boolean_icon(value)
elif value in field.empty_values:
return empty_value_display
elif isinstance(field, models.DateTimeField):
return formats.localize(timezone.template_localtime(value))
elif isinstance(field, (models.DateField, models.TimeField)):
return formats.localize(value)
elif isinstance(field, models.DecimalField):
return formats.number_format(value, field.decimal_places)
elif isinstance(field, (models.IntegerField, models.FloatField)):
return formats.number_format(value)
elif isinstance(field, models.FileField) and value and not avoid_link:
return format_html('<a href="{}">{}</a>', value.url, value)
elif isinstance(field, models.URLField) and value and not avoid_link:
return format_html('<a href="{}">{}</a>', value, value)
elif isinstance(field, models.JSONField) and value:
try:
return json.dumps(value, ensure_ascii=False, cls=field.encoder)
except TypeError:
return display_for_value(value, empty_value_display)
else:
return display_for_value(value, empty_value_display)
def display_for_value(value, empty_value_display, boolean=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if boolean:
return _boolean_icon(value)
elif value in EMPTY_VALUES:
return empty_value_display
elif isinstance(value, bool):
return str(value)
elif isinstance(value, datetime.datetime):
return formats.localize(timezone.template_localtime(value))
elif isinstance(value, (datetime.date, datetime.time)):
return formats.localize(value)
elif isinstance(value, (int, decimal.Decimal, float)):
return formats.number_format(value)
elif isinstance(value, (list, tuple)):
return ", ".join(str(v) for v in value)
else:
return str(value)
class NotRelationField(Exception):
pass
def get_model_from_relation(field):
if hasattr(field, "path_infos"):
return field.path_infos[-1].to_opts.model
else:
raise NotRelationField
def reverse_field_path(model, path):
"""Create a reversed field path.
E.g. Given (Order, "user__groups"),
return (Group, "user__order").
Final field must be a related model, not a data field.
"""
reversed_path = []
parent = model
pieces = path.split(LOOKUP_SEP)
for piece in pieces:
field = parent._meta.get_field(piece)
# skip trailing data field if extant:
if len(reversed_path) == len(pieces) - 1: # final iteration
try:
get_model_from_relation(field)
except NotRelationField:
break
# Field should point to another model
if field.is_relation and not (field.auto_created and not field.concrete):
related_name = field.related_query_name()
parent = field.remote_field.model
else:
related_name = field.field.name
parent = field.related_model
reversed_path.insert(0, related_name)
return (parent, LOOKUP_SEP.join(reversed_path))
def get_fields_from_path(model, path):
"""Return list of Fields given path relative to model.
e.g. (ModelX, "user__groups__name") -> [
<django.db.models.fields.related.ForeignKey object at 0x...>,
<django.db.models.fields.related.ManyToManyField object at 0x...>,
<django.db.models.fields.CharField object at 0x...>,
]
"""
pieces = path.split(LOOKUP_SEP)
fields = []
for piece in pieces:
if fields:
parent = get_model_from_relation(fields[-1])
else:
parent = model
fields.append(parent._meta.get_field(piece))
return fields
def construct_change_message(form, formsets, add):
"""
Construct a JSON structure describing changes from a changed object.
Translations are deactivated so that strings are stored untranslated.
Translation happens later on LogEntry access.
"""
# Evaluating `form.changed_data` prior to disabling translations is
# required to avoid fields affected by localization from being included
# incorrectly, e.g. where date formats differ such as MM/DD/YYYY vs
# DD/MM/YYYY.
changed_data = form.changed_data
with translation_override(None):
# Deactivate translations while fetching verbose_name for form
# field labels and using `field_name`, if verbose_name is not provided.
# Translations will happen later on LogEntry access.
changed_field_labels = _get_changed_field_labels_from_form(form, changed_data)
change_message = []
if add:
change_message.append({"added": {}})
elif form.changed_data:
change_message.append({"changed": {"fields": changed_field_labels}})
if formsets:
with translation_override(None):
for formset in formsets:
for added_object in formset.new_objects:
change_message.append(
{
"added": {
"name": str(added_object._meta.verbose_name),
"object": str(added_object),
}
}
)
for changed_object, changed_fields in formset.changed_objects:
change_message.append(
{
"changed": {
"name": str(changed_object._meta.verbose_name),
"object": str(changed_object),
"fields": _get_changed_field_labels_from_form(
formset.forms[0], changed_fields
),
}
}
)
for deleted_object in formset.deleted_objects:
change_message.append(
{
"deleted": {
"name": str(deleted_object._meta.verbose_name),
"object": str(deleted_object),
}
}
)
return change_message
def _get_changed_field_labels_from_form(form, changed_data):
changed_field_labels = []
for field_name in changed_data:
try:
verbose_field_name = form.fields[field_name].label or field_name
except KeyError:
verbose_field_name = field_name
changed_field_labels.append(str(verbose_field_name))
return changed_field_labels
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/__init__.py | django/contrib/admin/__init__.py | from django.contrib.admin.decorators import action, display, register
from django.contrib.admin.filters import (
AllValuesFieldListFilter,
BooleanFieldListFilter,
ChoicesFieldListFilter,
DateFieldListFilter,
EmptyFieldListFilter,
FieldListFilter,
ListFilter,
RelatedFieldListFilter,
RelatedOnlyFieldListFilter,
SimpleListFilter,
)
from django.contrib.admin.options import (
HORIZONTAL,
VERTICAL,
ModelAdmin,
ShowFacets,
StackedInline,
TabularInline,
)
from django.contrib.admin.sites import AdminSite, site
from django.utils.module_loading import autodiscover_modules
__all__ = [
"action",
"display",
"register",
"ModelAdmin",
"HORIZONTAL",
"VERTICAL",
"StackedInline",
"TabularInline",
"AdminSite",
"site",
"ListFilter",
"SimpleListFilter",
"FieldListFilter",
"BooleanFieldListFilter",
"RelatedFieldListFilter",
"ChoicesFieldListFilter",
"DateFieldListFilter",
"AllValuesFieldListFilter",
"EmptyFieldListFilter",
"RelatedOnlyFieldListFilter",
"ShowFacets",
"autodiscover",
]
def autodiscover():
autodiscover_modules("admin", register_to=site)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/tests.py | django/contrib/admin/tests.py | from contextlib import contextmanager
from django.contrib.staticfiles.testing import StaticLiveServerTestCase
from django.test import modify_settings, override_settings
from django.test.selenium import SeleniumTestCase
from django.utils.csp import CSP
from django.utils.translation import gettext as _
# Make unittest ignore frames in this module when reporting failures.
__unittest = True
@modify_settings(
MIDDLEWARE={"append": "django.middleware.csp.ContentSecurityPolicyMiddleware"}
)
@override_settings(
SECURE_CSP={
"default-src": [CSP.NONE],
"connect-src": [CSP.SELF],
"img-src": [CSP.SELF],
"script-src": [CSP.SELF],
"style-src": [CSP.SELF],
},
)
class AdminSeleniumTestCase(SeleniumTestCase, StaticLiveServerTestCase):
available_apps = [
"django.contrib.admin",
"django.contrib.auth",
"django.contrib.contenttypes",
"django.contrib.sessions",
"django.contrib.sites",
]
def tearDown(self):
# Ensure that no CSP violations were logged in the browser.
self.assertEqual(self.get_browser_logs(source="security"), [])
super().tearDown()
def wait_until(self, callback, timeout=10):
"""
Block the execution of the tests until the specified callback returns a
value that is not falsy. This method can be called, for example, after
clicking a link or submitting a form. See the other public methods that
call this function for more details.
"""
from selenium.webdriver.support.wait import WebDriverWait
WebDriverWait(self.selenium, timeout).until(callback)
def wait_for_and_switch_to_popup(self, num_windows=2, timeout=10):
"""
Block until `num_windows` are present and are ready (usually 2, but can
be overridden in the case of pop-ups opening other pop-ups). Switch the
current window to the new pop-up.
"""
self.wait_until(lambda d: len(d.window_handles) == num_windows, timeout)
self.selenium.switch_to.window(self.selenium.window_handles[-1])
self.wait_page_ready()
def wait_for(self, css_selector, timeout=10):
"""
Block until a CSS selector is found on the page.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as ec
self.wait_until(
ec.presence_of_element_located((By.CSS_SELECTOR, css_selector)), timeout
)
def wait_for_text(self, css_selector, text, timeout=10):
"""
Block until the text is found in the CSS selector.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as ec
self.wait_until(
ec.text_to_be_present_in_element((By.CSS_SELECTOR, css_selector), text),
timeout,
)
def wait_for_value(self, css_selector, text, timeout=10):
"""
Block until the value is found in the CSS selector.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as ec
self.wait_until(
ec.text_to_be_present_in_element_value(
(By.CSS_SELECTOR, css_selector), text
),
timeout,
)
def wait_until_visible(self, css_selector, timeout=10):
"""
Block until the element described by the CSS selector is visible.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as ec
self.wait_until(
ec.visibility_of_element_located((By.CSS_SELECTOR, css_selector)), timeout
)
def wait_until_invisible(self, css_selector, timeout=10):
"""
Block until the element described by the CSS selector is invisible.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as ec
self.wait_until(
ec.invisibility_of_element_located((By.CSS_SELECTOR, css_selector)), timeout
)
def wait_page_ready(self, timeout=10):
"""
Block until the page is ready.
"""
self.wait_until(
lambda driver: driver.execute_script("return document.readyState;")
== "complete",
timeout,
)
@contextmanager
def wait_page_loaded(self, timeout=10):
"""
Block until a new page has loaded and is ready.
"""
from selenium.common.exceptions import WebDriverException
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as ec
old_page = self.selenium.find_element(By.TAG_NAME, "html")
yield
# Wait for the next page to be loaded
try:
self.wait_until(ec.staleness_of(old_page), timeout=timeout)
except WebDriverException:
# Issue in version 113+ of Chrome driver where a WebDriverException
# error is raised rather than a StaleElementReferenceException.
# See: https://issues.chromium.org/issues/42323468
pass
self.wait_page_ready(timeout=timeout)
def trigger_resize(self):
width = self.selenium.get_window_size()["width"]
height = self.selenium.get_window_size()["height"]
self.selenium.set_window_size(width + 1, height)
self.wait_page_ready()
self.selenium.set_window_size(width, height)
self.wait_page_ready()
def admin_login(self, username, password, login_url="/admin/"):
"""
Log in to the admin.
"""
from selenium.webdriver.common.by import By
self.selenium.get("%s%s" % (self.live_server_url, login_url))
username_input = self.selenium.find_element(By.NAME, "username")
username_input.send_keys(username)
password_input = self.selenium.find_element(By.NAME, "password")
password_input.send_keys(password)
login_text = _("Log in")
with self.wait_page_loaded():
self.selenium.find_element(
By.XPATH, '//input[@value="%s"]' % login_text
).click()
def select_option(self, selector, value):
"""
Select the <OPTION> with the value `value` inside the <SELECT> widget
identified by the CSS selector `selector`.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
select = Select(self.selenium.find_element(By.CSS_SELECTOR, selector))
select.select_by_value(value)
def deselect_option(self, selector, value):
"""
Deselect the <OPTION> with the value `value` inside the <SELECT> widget
identified by the CSS selector `selector`.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
select = Select(self.selenium.find_element(By.CSS_SELECTOR, selector))
select.deselect_by_value(value)
def assertCountSeleniumElements(self, selector, count, root_element=None):
"""
Assert number of matches for a CSS selector.
`root_element` allow restriction to a pre-selected node.
"""
from selenium.webdriver.common.by import By
root_element = root_element or self.selenium
self.assertEqual(
len(root_element.find_elements(By.CSS_SELECTOR, selector)), count
)
def _assertOptionsValues(self, options_selector, values):
from selenium.webdriver.common.by import By
if values:
options = self.selenium.find_elements(By.CSS_SELECTOR, options_selector)
actual_values = []
for option in options:
actual_values.append(option.get_attribute("value"))
self.assertEqual(values, actual_values)
else:
# Prevent the `find_elements(By.CSS_SELECTOR, …)` call from
# blocking if the selector doesn't match any options as we expect
# it to be the case.
with self.disable_implicit_wait():
self.wait_until(
lambda driver: not driver.find_elements(
By.CSS_SELECTOR, options_selector
)
)
def assertSelectOptions(self, selector, values):
"""
Assert that the <SELECT> widget identified by `selector` has the
options with the given `values`.
"""
self._assertOptionsValues("%s > option" % selector, values)
def assertSelectedOptions(self, selector, values):
"""
Assert that the <SELECT> widget identified by `selector` has the
selected options with the given `values`.
"""
self._assertOptionsValues("%s > option:checked" % selector, values)
def is_disabled(self, selector):
"""
Return True if the element identified by `selector` has the `disabled`
attribute.
"""
from selenium.webdriver.common.by import By
return (
self.selenium.find_element(By.CSS_SELECTOR, selector).get_attribute(
"disabled"
)
== "true"
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/apps.py | django/contrib/admin/apps.py | from django.apps import AppConfig
from django.contrib.admin.checks import check_admin_app, check_dependencies
from django.core import checks
from django.utils.translation import gettext_lazy as _
class SimpleAdminConfig(AppConfig):
"""Simple AppConfig which does not do automatic discovery."""
default_auto_field = "django.db.models.AutoField"
default_site = "django.contrib.admin.sites.AdminSite"
name = "django.contrib.admin"
verbose_name = _("Administration")
def ready(self):
checks.register(check_dependencies, checks.Tags.admin)
checks.register(check_admin_app, checks.Tags.admin)
class AdminConfig(SimpleAdminConfig):
"""The default AppConfig for admin which does autodiscovery."""
default = True
def ready(self):
super().ready()
self.module.autodiscover()
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/actions.py | django/contrib/admin/actions.py | """
Built-in, globally-available admin actions.
"""
from django.contrib import messages
from django.contrib.admin import helpers
from django.contrib.admin.decorators import action
from django.contrib.admin.utils import model_ngettext
from django.core.exceptions import PermissionDenied
from django.template.response import TemplateResponse
from django.utils.translation import gettext as _
from django.utils.translation import gettext_lazy
@action(
permissions=["delete"],
description=gettext_lazy("Delete selected %(verbose_name_plural)s"),
)
def delete_selected(modeladmin, request, queryset):
"""
Default action which deletes the selected objects.
This action first displays a confirmation page which shows all the
deletable objects, or, if the user has no permission one of the related
childs (foreignkeys), a "permission denied" message.
Next, it deletes all selected objects and redirects back to the change
list.
"""
opts = modeladmin.model._meta
app_label = opts.app_label
# Populate deletable_objects, a data structure of all related objects that
# will also be deleted.
(
deletable_objects,
model_count,
perms_needed,
protected,
) = modeladmin.get_deleted_objects(queryset, request)
# The user has already confirmed the deletion.
# Do the deletion and return None to display the change list view again.
if request.POST.get("post") and not protected:
if perms_needed:
raise PermissionDenied
n = len(queryset)
if n:
modeladmin.log_deletions(request, queryset)
modeladmin.delete_queryset(request, queryset)
modeladmin.message_user(
request,
_("Successfully deleted %(count)d %(items)s.")
% {"count": n, "items": model_ngettext(modeladmin.opts, n)},
messages.SUCCESS,
)
# Return None to display the change list page again.
return None
objects_name = model_ngettext(queryset)
if perms_needed or protected:
title = _("Cannot delete %(name)s") % {"name": objects_name}
else:
title = _("Delete multiple objects")
context = {
**modeladmin.admin_site.each_context(request),
"title": title,
"subtitle": None,
"objects_name": str(objects_name),
"deletable_objects": [deletable_objects],
"model_count": dict(model_count).items(),
"queryset": queryset,
"perms_lacking": perms_needed,
"protected": protected,
"opts": opts,
"action_checkbox_name": helpers.ACTION_CHECKBOX_NAME,
"media": modeladmin.media,
}
request.current_app = modeladmin.admin_site.name
# Display the confirmation page
return TemplateResponse(
request,
modeladmin.delete_selected_confirmation_template
or [
"admin/%s/%s/delete_selected_confirmation.html"
% (app_label, opts.model_name),
"admin/%s/delete_selected_confirmation.html" % app_label,
"admin/delete_selected_confirmation.html",
],
context,
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/forms.py | django/contrib/admin/forms.py | from django.contrib.auth.forms import AuthenticationForm, PasswordChangeForm
from django.core.exceptions import ValidationError
from django.utils.translation import gettext_lazy as _
class AdminAuthenticationForm(AuthenticationForm):
"""
A custom authentication form used in the admin app.
"""
error_messages = {
**AuthenticationForm.error_messages,
"invalid_login": _(
"Please enter the correct %(username)s and password for a staff "
"account. Note that both fields may be case-sensitive."
),
}
required_css_class = "required"
def confirm_login_allowed(self, user):
super().confirm_login_allowed(user)
if not user.is_staff:
raise ValidationError(
self.error_messages["invalid_login"],
code="invalid_login",
params={"username": self.username_field.verbose_name},
)
class AdminPasswordChangeForm(PasswordChangeForm):
required_css_class = "required"
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/options.py | django/contrib/admin/options.py | import copy
import enum
import json
import re
from functools import partial, update_wrapper
from urllib.parse import parse_qsl
from urllib.parse import quote as urlquote
from urllib.parse import urlsplit
from django import forms
from django.conf import settings
from django.contrib import messages
from django.contrib.admin import helpers, widgets
from django.contrib.admin.checks import (
BaseModelAdminChecks,
InlineModelAdminChecks,
ModelAdminChecks,
)
from django.contrib.admin.exceptions import DisallowedModelAdminToField, NotRegistered
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.utils import (
NestedObjects,
construct_change_message,
flatten_fieldsets,
get_deleted_objects,
lookup_spawns_duplicates,
model_format_dict,
model_ngettext,
quote,
unquote,
)
from django.contrib.admin.widgets import AutocompleteSelect, AutocompleteSelectMultiple
from django.contrib.auth import get_permission_codename
from django.core.exceptions import (
FieldDoesNotExist,
FieldError,
PermissionDenied,
ValidationError,
)
from django.core.paginator import Paginator
from django.db import models, router, transaction
from django.db.models.constants import LOOKUP_SEP
from django.db.models.functions import Cast
from django.forms.formsets import DELETION_FIELD_NAME, all_valid
from django.forms.models import (
BaseInlineFormSet,
inlineformset_factory,
modelform_defines_fields,
modelform_factory,
modelformset_factory,
)
from django.forms.widgets import CheckboxSelectMultiple, SelectMultiple
from django.http import HttpResponseRedirect
from django.http.response import HttpResponseBase
from django.template.response import SimpleTemplateResponse, TemplateResponse
from django.urls import reverse
from django.utils.decorators import method_decorator
from django.utils.html import format_html
from django.utils.http import urlencode
from django.utils.safestring import mark_safe
from django.utils.text import (
capfirst,
format_lazy,
get_text_list,
smart_split,
unescape_string_literal,
)
from django.utils.translation import gettext as _
from django.utils.translation import ngettext
from django.views.decorators.csrf import csrf_protect
from django.views.generic import RedirectView
IS_POPUP_VAR = "_popup"
TO_FIELD_VAR = "_to_field"
IS_FACETS_VAR = "_facets"
class ShowFacets(enum.Enum):
NEVER = "NEVER"
ALLOW = "ALLOW"
ALWAYS = "ALWAYS"
HORIZONTAL, VERTICAL = 1, 2
def get_content_type_for_model(obj):
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level.
from django.contrib.contenttypes.models import ContentType
return ContentType.objects.get_for_model(obj, for_concrete_model=False)
def get_ul_class(radio_style):
return "radiolist" if radio_style == VERTICAL else "radiolist inline"
class IncorrectLookupParameters(Exception):
pass
# Defaults for formfield_overrides. ModelAdmin subclasses can change this
# by adding to ModelAdmin.formfield_overrides.
FORMFIELD_FOR_DBFIELD_DEFAULTS = {
models.DateTimeField: {
"form_class": forms.SplitDateTimeField,
"widget": widgets.AdminSplitDateTime,
},
models.DateField: {"widget": widgets.AdminDateWidget},
models.TimeField: {"widget": widgets.AdminTimeWidget},
models.TextField: {"widget": widgets.AdminTextareaWidget},
models.URLField: {"widget": widgets.AdminURLFieldWidget},
models.IntegerField: {"widget": widgets.AdminIntegerFieldWidget},
models.BigIntegerField: {"widget": widgets.AdminBigIntegerFieldWidget},
models.CharField: {"widget": widgets.AdminTextInputWidget},
models.ImageField: {"widget": widgets.AdminFileWidget},
models.FileField: {"widget": widgets.AdminFileWidget},
models.EmailField: {"widget": widgets.AdminEmailInputWidget},
models.UUIDField: {"widget": widgets.AdminUUIDInputWidget},
}
csrf_protect_m = method_decorator(csrf_protect)
class BaseModelAdmin(metaclass=forms.MediaDefiningClass):
"""Functionality common to both ModelAdmin and InlineAdmin."""
autocomplete_fields = ()
raw_id_fields = ()
fields = None
exclude = None
fieldsets = None
form = forms.ModelForm
filter_vertical = ()
filter_horizontal = ()
radio_fields = {}
prepopulated_fields = {}
formfield_overrides = {}
readonly_fields = ()
ordering = None
sortable_by = None
view_on_site = True
show_full_result_count = True
checks_class = BaseModelAdminChecks
def check(self, **kwargs):
return self.checks_class().check(self, **kwargs)
def __init__(self):
# Merge FORMFIELD_FOR_DBFIELD_DEFAULTS with the formfield_overrides
# rather than simply overwriting.
overrides = copy.deepcopy(FORMFIELD_FOR_DBFIELD_DEFAULTS)
for k, v in self.formfield_overrides.items():
overrides.setdefault(k, {}).update(v)
self.formfield_overrides = overrides
def formfield_for_dbfield(self, db_field, request, **kwargs):
"""
Hook for specifying the form Field instance for a given database Field
instance.
If kwargs are given, they're passed to the form Field's constructor.
"""
# If the field specifies choices, we don't need to look for special
# admin widgets - we just need to use a select widget of some kind.
if db_field.choices:
return self.formfield_for_choice_field(db_field, request, **kwargs)
# ForeignKey or ManyToManyFields
if isinstance(db_field, (models.ForeignKey, models.ManyToManyField)):
# Combine the field kwargs with any options for
# formfield_overrides. Make sure the passed in **kwargs override
# anything in formfield_overrides because **kwargs is more
# specific, and should always win.
if db_field.__class__ in self.formfield_overrides:
kwargs = {**self.formfield_overrides[db_field.__class__], **kwargs}
# Get the correct formfield.
if isinstance(db_field, models.ForeignKey):
formfield = self.formfield_for_foreignkey(db_field, request, **kwargs)
elif isinstance(db_field, models.ManyToManyField):
formfield = self.formfield_for_manytomany(db_field, request, **kwargs)
# For non-raw_id fields, wrap the widget with a wrapper that adds
# extra HTML -- the "add other" interface -- to the end of the
# rendered output. formfield can be None if it came from a
# OneToOneField with parent_link=True or a M2M intermediary.
if formfield and db_field.name not in self.raw_id_fields:
try:
related_modeladmin = self.admin_site.get_model_admin(
db_field.remote_field.model
)
except NotRegistered:
wrapper_kwargs = {}
else:
wrapper_kwargs = {
"can_add_related": related_modeladmin.has_add_permission(
request
),
"can_change_related": related_modeladmin.has_change_permission(
request
),
"can_delete_related": related_modeladmin.has_delete_permission(
request
),
"can_view_related": related_modeladmin.has_view_permission(
request
),
}
formfield.widget = widgets.RelatedFieldWidgetWrapper(
formfield.widget,
db_field.remote_field,
self.admin_site,
**wrapper_kwargs,
)
return formfield
# If we've got overrides for the formfield defined, use 'em. **kwargs
# passed to formfield_for_dbfield override the defaults.
for klass in db_field.__class__.mro():
if klass in self.formfield_overrides:
kwargs = {**copy.deepcopy(self.formfield_overrides[klass]), **kwargs}
return db_field.formfield(**kwargs)
# For any other type of field, just call its formfield() method.
return db_field.formfield(**kwargs)
def formfield_for_choice_field(self, db_field, request, **kwargs):
"""
Get a form Field for a database Field that has declared choices.
"""
# If the field is named as a radio_field, use a RadioSelect
if db_field.name in self.radio_fields:
# Avoid stomping on custom widget/choices arguments.
if "widget" not in kwargs:
kwargs["widget"] = widgets.AdminRadioSelect(
attrs={
"class": get_ul_class(self.radio_fields[db_field.name]),
}
)
if "choices" not in kwargs:
kwargs["choices"] = db_field.get_choices(
include_blank=db_field.blank, blank_choice=[("", _("None"))]
)
return db_field.formfield(**kwargs)
def get_field_queryset(self, db, db_field, request):
"""
If the ModelAdmin specifies ordering, the queryset should respect that
ordering. Otherwise don't specify the queryset, let the field decide
(return None in that case).
"""
try:
related_admin = self.admin_site.get_model_admin(db_field.remote_field.model)
except NotRegistered:
return None
else:
ordering = related_admin.get_ordering(request)
if ordering is not None and ordering != ():
return db_field.remote_field.model._default_manager.using(db).order_by(
*ordering
)
return None
def formfield_for_foreignkey(self, db_field, request, **kwargs):
"""
Get a form Field for a ForeignKey.
"""
db = kwargs.get("using")
if "widget" not in kwargs:
if db_field.name in self.get_autocomplete_fields(request):
kwargs["widget"] = AutocompleteSelect(
db_field, self.admin_site, using=db
)
elif db_field.name in self.raw_id_fields:
kwargs["widget"] = widgets.ForeignKeyRawIdWidget(
db_field.remote_field, self.admin_site, using=db
)
elif db_field.name in self.radio_fields:
kwargs["widget"] = widgets.AdminRadioSelect(
attrs={
"class": get_ul_class(self.radio_fields[db_field.name]),
}
)
kwargs["empty_label"] = (
kwargs.get("empty_label", _("None")) if db_field.blank else None
)
if "queryset" not in kwargs:
queryset = self.get_field_queryset(db, db_field, request)
if queryset is not None:
kwargs["queryset"] = queryset
return db_field.formfield(**kwargs)
def formfield_for_manytomany(self, db_field, request, **kwargs):
"""
Get a form Field for a ManyToManyField.
"""
# If it uses an intermediary model that isn't auto created, don't show
# a field in admin.
if not db_field.remote_field.through._meta.auto_created:
return None
db = kwargs.get("using")
if "widget" not in kwargs:
autocomplete_fields = self.get_autocomplete_fields(request)
if db_field.name in autocomplete_fields:
kwargs["widget"] = AutocompleteSelectMultiple(
db_field,
self.admin_site,
using=db,
)
elif db_field.name in self.raw_id_fields:
kwargs["widget"] = widgets.ManyToManyRawIdWidget(
db_field.remote_field,
self.admin_site,
using=db,
)
elif db_field.name in [*self.filter_vertical, *self.filter_horizontal]:
kwargs["widget"] = widgets.FilteredSelectMultiple(
db_field.verbose_name, db_field.name in self.filter_vertical
)
if "queryset" not in kwargs:
queryset = self.get_field_queryset(db, db_field, request)
if queryset is not None:
kwargs["queryset"] = queryset
form_field = db_field.formfield(**kwargs)
if (
isinstance(form_field.widget, SelectMultiple)
and form_field.widget.allow_multiple_selected
and not isinstance(
form_field.widget, (CheckboxSelectMultiple, AutocompleteSelectMultiple)
)
):
msg = _(
"Hold down “Control”, or “Command” on a Mac, to select more than one."
)
help_text = form_field.help_text
form_field.help_text = (
format_lazy("{} {}", help_text, msg) if help_text else msg
)
return form_field
def get_autocomplete_fields(self, request):
"""
Return a list of ForeignKey and/or ManyToMany fields which should use
an autocomplete widget.
"""
return self.autocomplete_fields
def get_view_on_site_url(self, obj=None):
if obj is None or not self.view_on_site:
return None
if callable(self.view_on_site):
return self.view_on_site(obj)
elif hasattr(obj, "get_absolute_url"):
# use the ContentType lookup if view_on_site is True
return reverse(
"admin:view_on_site",
kwargs={
"content_type_id": get_content_type_for_model(obj).pk,
"object_id": obj.pk,
},
current_app=self.admin_site.name,
)
def get_empty_value_display(self):
"""
Return the empty_value_display set on ModelAdmin or AdminSite.
"""
try:
return mark_safe(self.empty_value_display)
except AttributeError:
return mark_safe(self.admin_site.empty_value_display)
def get_exclude(self, request, obj=None):
"""
Hook for specifying exclude.
"""
return self.exclude
def get_fields(self, request, obj=None):
"""
Hook for specifying fields.
"""
if self.fields:
return self.fields
# _get_form_for_get_fields() is implemented in subclasses.
form = self._get_form_for_get_fields(request, obj)
return [*form.base_fields, *self.get_readonly_fields(request, obj)]
def get_fieldsets(self, request, obj=None):
"""
Hook for specifying fieldsets.
"""
if self.fieldsets:
return self.fieldsets
return [(None, {"fields": self.get_fields(request, obj)})]
def get_inlines(self, request, obj):
"""Hook for specifying custom inlines."""
return self.inlines
def get_ordering(self, request):
"""
Hook for specifying field ordering.
"""
return self.ordering or () # otherwise we might try to *None, which is bad ;)
def get_readonly_fields(self, request, obj=None):
"""
Hook for specifying custom readonly fields.
"""
return self.readonly_fields
def get_prepopulated_fields(self, request, obj=None):
"""
Hook for specifying custom prepopulated fields.
"""
return self.prepopulated_fields
def get_queryset(self, request):
"""
Return a QuerySet of all model instances that can be edited by the
admin site. This is used by changelist_view.
"""
qs = self.model._default_manager.get_queryset()
# TODO: this should be handled by some parameter to the ChangeList.
ordering = self.get_ordering(request)
if ordering:
qs = qs.order_by(*ordering)
return qs
def get_sortable_by(self, request):
"""Hook for specifying which fields can be sorted in the changelist."""
return (
self.sortable_by
if self.sortable_by is not None
else self.get_list_display(request)
)
def lookup_allowed(self, lookup, value, request):
from django.contrib.admin.filters import SimpleListFilter
model = self.model
# Check FKey lookups that are allowed, so that popups produced by
# ForeignKeyRawIdWidget, on the basis of ForeignKey.limit_choices_to,
# are allowed to work.
for fk_lookup in model._meta.related_fkey_lookups:
# As ``limit_choices_to`` can be a callable, invoke it here.
if callable(fk_lookup):
fk_lookup = fk_lookup()
if (lookup, value) in widgets.url_params_from_lookup_dict(
fk_lookup
).items():
return True
relation_parts = []
prev_field = None
parts = lookup.split(LOOKUP_SEP)
for part in parts:
try:
field = model._meta.get_field(part)
except FieldDoesNotExist:
# Lookups on nonexistent fields are ok, since they're ignored
# later.
break
if not prev_field or (
prev_field.is_relation
and field not in model._meta.parents.values()
and field is not model._meta.auto_field
and (
model._meta.auto_field is None
or part not in getattr(prev_field, "to_fields", [])
)
and (field.is_relation or not field.primary_key)
):
relation_parts.append(part)
if not getattr(field, "path_infos", None):
# This is not a relational field, so further parts
# must be transforms.
break
prev_field = field
model = field.path_infos[-1].to_opts.model
if len(relation_parts) <= 1:
# Either a local field filter, or no fields at all.
return True
valid_lookups = {self.date_hierarchy}
for filter_item in self.get_list_filter(request):
if isinstance(filter_item, type) and issubclass(
filter_item, SimpleListFilter
):
valid_lookups.add(filter_item.parameter_name)
elif isinstance(filter_item, (list, tuple)):
valid_lookups.add(filter_item[0])
else:
valid_lookups.add(filter_item)
# Is it a valid relational lookup?
return not {
LOOKUP_SEP.join(relation_parts),
LOOKUP_SEP.join([*relation_parts, part]),
}.isdisjoint(valid_lookups)
def to_field_allowed(self, request, to_field):
"""
Return True if the model associated with this admin should be
allowed to be referenced by the specified field.
"""
try:
field = self.opts.get_field(to_field)
except FieldDoesNotExist:
return False
# Always allow referencing the primary key since it's already possible
# to get this information from the change view URL.
if field.primary_key:
return True
# Allow reverse relationships to models defining m2m fields if they
# target the specified field.
for many_to_many in self.opts.many_to_many:
if many_to_many.m2m_target_field_name() == to_field:
return True
# Make sure at least one of the models registered for this site
# references this field through a FK or a M2M relationship.
registered_models = set()
for model, admin in self.admin_site._registry.items():
registered_models.add(model)
for inline in admin.inlines:
registered_models.add(inline.model)
related_objects = (
f
for f in self.opts.get_fields(include_hidden=True)
if (f.auto_created and not f.concrete)
)
for related_object in related_objects:
related_model = related_object.related_model
remote_field = related_object.field.remote_field
if (
any(issubclass(model, related_model) for model in registered_models)
and hasattr(remote_field, "get_related_field")
and remote_field.get_related_field() == field
):
return True
return False
def has_add_permission(self, request):
"""
Return True if the given request has permission to add an object.
Can be overridden by the user in subclasses.
"""
opts = self.opts
codename = get_permission_codename("add", opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_change_permission(self, request, obj=None):
"""
Return True if the given request has permission to change the given
Django model instance, the default implementation doesn't examine the
`obj` parameter.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to change the `obj`
model instance. If `obj` is None, this should return True if the given
request has permission to change *any* object of the given type.
"""
opts = self.opts
codename = get_permission_codename("change", opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_delete_permission(self, request, obj=None):
"""
Return True if the given request has permission to delete the given
Django model instance, the default implementation doesn't examine the
`obj` parameter.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to delete the `obj`
model instance. If `obj` is None, this should return True if the given
request has permission to delete *any* object of the given type.
"""
opts = self.opts
codename = get_permission_codename("delete", opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_view_permission(self, request, obj=None):
"""
Return True if the given request has permission to view the given
Django model instance. The default implementation doesn't examine the
`obj` parameter.
If overridden by the user in subclasses, it should return True if the
given request has permission to view the `obj` model instance. If `obj`
is None, it should return True if the request has permission to view
any object of the given type.
"""
opts = self.opts
codename_view = get_permission_codename("view", opts)
codename_change = get_permission_codename("change", opts)
return request.user.has_perm(
"%s.%s" % (opts.app_label, codename_view)
) or request.user.has_perm("%s.%s" % (opts.app_label, codename_change))
def has_view_or_change_permission(self, request, obj=None):
return self.has_view_permission(request, obj) or self.has_change_permission(
request, obj
)
def has_module_permission(self, request):
"""
Return True if the given request has any permission in the given
app label.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to view the module on
the admin index page and access the module's index page. Overriding it
does not restrict access to the add, change or delete views. Use
`ModelAdmin.has_(add|change|delete)_permission` for that.
"""
return request.user.has_module_perms(self.opts.app_label)
class ModelAdmin(BaseModelAdmin):
"""Encapsulate all admin options and functionality for a given model."""
list_display = ("__str__",)
list_display_links = ()
list_filter = ()
list_select_related = False
list_per_page = 100
list_max_show_all = 200
list_editable = ()
search_fields = ()
search_help_text = None
date_hierarchy = None
save_as = False
save_as_continue = True
save_on_top = False
paginator = Paginator
preserve_filters = True
show_facets = ShowFacets.ALLOW
inlines = ()
# Custom templates (designed to be over-ridden in subclasses)
add_form_template = None
change_form_template = None
change_list_template = None
delete_confirmation_template = None
delete_selected_confirmation_template = None
object_history_template = None
popup_response_template = None
# Actions
actions = ()
action_form = helpers.ActionForm
actions_on_top = True
actions_on_bottom = False
actions_selection_counter = True
checks_class = ModelAdminChecks
def __init__(self, model, admin_site):
self.model = model
self.opts = model._meta
self.admin_site = admin_site
super().__init__()
def __str__(self):
return "%s.%s" % (self.opts.app_label, self.__class__.__name__)
def __repr__(self):
return (
f"<{self.__class__.__qualname__}: model={self.model.__qualname__} "
f"site={self.admin_site!r}>"
)
def get_inline_instances(self, request, obj=None):
inline_instances = []
for inline_class in self.get_inlines(request, obj):
inline = inline_class(self.model, self.admin_site)
if request:
if not (
inline.has_view_or_change_permission(request, obj)
or inline.has_add_permission(request, obj)
or inline.has_delete_permission(request, obj)
):
continue
if not inline.has_add_permission(request, obj):
inline.max_num = 0
inline_instances.append(inline)
return inline_instances
def get_urls(self):
from django.urls import path
def wrap(view):
def wrapper(*args, **kwargs):
return self.admin_site.admin_view(view)(*args, **kwargs)
wrapper.model_admin = self
return update_wrapper(wrapper, view)
info = self.opts.app_label, self.opts.model_name
return [
path("", wrap(self.changelist_view), name="%s_%s_changelist" % info),
path("add/", wrap(self.add_view), name="%s_%s_add" % info),
path(
"<path:object_id>/history/",
wrap(self.history_view),
name="%s_%s_history" % info,
),
path(
"<path:object_id>/delete/",
wrap(self.delete_view),
name="%s_%s_delete" % info,
),
path(
"<path:object_id>/change/",
wrap(self.change_view),
name="%s_%s_change" % info,
),
# For backwards compatibility (was the change url before 1.9)
path(
"<path:object_id>/",
wrap(
RedirectView.as_view(
pattern_name="%s:%s_%s_change" % (self.admin_site.name, *info)
)
),
),
]
@property
def urls(self):
return self.get_urls()
@property
def media(self):
extra = "" if settings.DEBUG else ".min"
js = [
"vendor/jquery/jquery%s.js" % extra,
"jquery.init.js",
"core.js",
"admin/RelatedObjectLookups.js",
"actions.js",
"urlify.js",
"prepopulate.js",
"vendor/xregexp/xregexp%s.js" % extra,
]
return forms.Media(js=["admin/js/%s" % url for url in js])
def get_model_perms(self, request):
"""
Return a dict of all perms for this model. This dict has the keys
``add``, ``change``, ``delete``, and ``view`` mapping to the True/False
for each of those actions.
"""
return {
"add": self.has_add_permission(request),
"change": self.has_change_permission(request),
"delete": self.has_delete_permission(request),
"view": self.has_view_permission(request),
}
def _get_form_for_get_fields(self, request, obj):
return self.get_form(request, obj, fields=None)
def get_form(self, request, obj=None, change=False, **kwargs):
"""
Return a Form class for use in the admin add view. This is used by
add_view and change_view.
"""
if "fields" in kwargs:
fields = kwargs.pop("fields")
else:
fields = flatten_fieldsets(self.get_fieldsets(request, obj))
excluded = self.get_exclude(request, obj)
exclude = [] if excluded is None else list(excluded)
readonly_fields = self.get_readonly_fields(request, obj)
exclude.extend(readonly_fields)
# Exclude all fields if it's a change form and the user doesn't have
# the change permission.
if (
change
and hasattr(request, "user")
and not self.has_change_permission(request, obj)
):
exclude.extend(fields)
if excluded is None and hasattr(self.form, "_meta") and self.form._meta.exclude:
# Take the custom ModelForm's Meta.exclude into account only if the
# ModelAdmin doesn't define its own.
exclude.extend(self.form._meta.exclude)
# if exclude is an empty list we pass None to be consistent with the
# default on modelform_factory
exclude = exclude or None
# Remove declared form fields which are in readonly_fields.
new_attrs = dict.fromkeys(
f for f in readonly_fields if f in self.form.declared_fields
)
form = type(self.form.__name__, (self.form,), new_attrs)
defaults = {
"form": form,
"fields": fields,
"exclude": exclude,
"formfield_callback": partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
if defaults["fields"] is None and not modelform_defines_fields(
defaults["form"]
):
defaults["fields"] = forms.ALL_FIELDS
try:
return modelform_factory(self.model, **defaults)
except FieldError as e:
raise FieldError(
"%s. Check fields/fieldsets/exclude attributes of class %s."
% (e, self.__class__.__name__)
)
def get_changelist(self, request, **kwargs):
"""
Return the ChangeList class for use on the changelist page.
"""
from django.contrib.admin.views.main import ChangeList
return ChangeList
def get_changelist_instance(self, request):
"""
Return a `ChangeList` instance based on `request`. May raise
`IncorrectLookupParameters`.
"""
list_display = self.get_list_display(request)
list_display_links = self.get_list_display_links(request, list_display)
# Add the action checkboxes if any actions are available.
if self.get_actions(request):
list_display = ["action_checkbox", *list_display]
sortable_by = self.get_sortable_by(request)
ChangeList = self.get_changelist(request)
return ChangeList(
request,
self.model,
list_display,
list_display_links,
self.get_list_filter(request),
self.date_hierarchy,
self.get_search_fields(request),
self.get_list_select_related(request),
self.list_per_page,
self.list_max_show_all,
self.list_editable,
self,
sortable_by,
self.search_help_text,
)
def get_object(self, request, object_id, from_field=None):
"""
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | true |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/templatetags/admin_urls.py | django/contrib/admin/templatetags/admin_urls.py | from urllib.parse import parse_qsl, unquote, urlsplit, urlunsplit
from django import template
from django.contrib.admin.utils import quote
from django.urls import Resolver404, get_script_prefix, resolve
from django.utils.http import urlencode
register = template.Library()
@register.filter
def admin_urlname(value, arg):
return "admin:%s_%s_%s" % (value.app_label, value.model_name, arg)
@register.filter
def admin_urlquote(value):
return quote(value)
@register.simple_tag(takes_context=True)
def add_preserved_filters(context, url, popup=False, to_field=None):
opts = context.get("opts")
preserved_filters = context.get("preserved_filters")
preserved_qsl = context.get("preserved_qsl")
parsed_url = list(urlsplit(url))
parsed_qs = dict(parse_qsl(parsed_url[3]))
merged_qs = {}
if preserved_qsl:
merged_qs.update(preserved_qsl)
if opts and preserved_filters:
preserved_filters = dict(parse_qsl(preserved_filters))
match_url = "/%s" % unquote(url).partition(get_script_prefix())[2]
try:
match = resolve(match_url)
except Resolver404:
pass
else:
current_url = "%s:%s" % (match.app_name, match.url_name)
changelist_url = "admin:%s_%s_changelist" % (
opts.app_label,
opts.model_name,
)
if (
changelist_url == current_url
and "_changelist_filters" in preserved_filters
):
preserved_filters = dict(
parse_qsl(preserved_filters["_changelist_filters"])
)
merged_qs.update(preserved_filters)
if popup:
from django.contrib.admin.options import IS_POPUP_VAR
merged_qs[IS_POPUP_VAR] = 1
if to_field:
from django.contrib.admin.options import TO_FIELD_VAR
merged_qs[TO_FIELD_VAR] = to_field
merged_qs.update(parsed_qs)
parsed_url[3] = urlencode(merged_qs)
return urlunsplit(parsed_url)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/templatetags/log.py | django/contrib/admin/templatetags/log.py | from django import template
register = template.Library()
class AdminLogNode(template.Node):
def __init__(self, limit, varname, user):
self.limit = limit
self.varname = varname
self.user = user
def __repr__(self):
return "<GetAdminLog Node>"
def render(self, context):
entries = context["log_entries"]
if self.user is not None:
user_id = self.user
if not user_id.isdigit():
user_id = context[self.user].pk
entries = entries.filter(user__pk=user_id)
context[self.varname] = entries[: int(self.limit)]
return ""
@register.tag
def get_admin_log(parser, token):
"""
Populate a template variable with the admin log for the given criteria.
Usage::
{% get_admin_log [limit] as [varname] for_user [user_id_or_varname] %}
Examples::
{% get_admin_log 10 as admin_log for_user 23 %}
{% get_admin_log 10 as admin_log for_user user %}
{% get_admin_log 10 as admin_log %}
Note that ``user_id_or_varname`` can be a hard-coded integer (user ID)
or the name of a template context variable containing the user object
whose ID you want.
"""
tokens = token.contents.split()
if len(tokens) < 4:
raise template.TemplateSyntaxError(
"'get_admin_log' statements require two arguments"
)
if not tokens[1].isdigit():
raise template.TemplateSyntaxError(
"First argument to 'get_admin_log' must be an integer"
)
if tokens[2] != "as":
raise template.TemplateSyntaxError(
"Second argument to 'get_admin_log' must be 'as'"
)
if len(tokens) > 4:
if tokens[4] != "for_user":
raise template.TemplateSyntaxError(
"Fourth argument to 'get_admin_log' must be 'for_user'"
)
return AdminLogNode(
limit=tokens[1],
varname=tokens[3],
user=(tokens[5] if len(tokens) > 5 else None),
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/templatetags/__init__.py | django/contrib/admin/templatetags/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/templatetags/admin_list.py | django/contrib/admin/templatetags/admin_list.py | import datetime
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.utils import (
display_for_field,
display_for_value,
get_fields_from_path,
label_for_field,
lookup_field,
)
from django.contrib.admin.views.main import (
ALL_VAR,
IS_FACETS_VAR,
IS_POPUP_VAR,
ORDER_VAR,
PAGE_VAR,
SEARCH_VAR,
)
from django.core.exceptions import ObjectDoesNotExist
from django.db import models
from django.db.models.constants import LOOKUP_SEP
from django.template import Library
from django.template.loader import get_template
from django.templatetags.static import static
from django.urls import NoReverseMatch
from django.utils import formats, timezone
from django.utils.html import format_html
from django.utils.safestring import SafeString, mark_safe
from django.utils.text import capfirst
from django.utils.translation import gettext as _
from .base import InclusionAdminNode
register = Library()
@register.simple_tag
def paginator_number(cl, i):
"""
Generate an individual page index link in a paginated list.
"""
if i == cl.paginator.ELLIPSIS:
return format_html("{} ", cl.paginator.ELLIPSIS)
elif i == cl.page_num:
return format_html(
'<a role="button" href="" aria-current="page">{}</a> ',
i,
)
else:
return format_html(
'<a role="button" href="{}">{}</a> ',
cl.get_query_string({PAGE_VAR: i}),
i,
)
def pagination(cl):
"""
Generate the series of links to the pages in a paginated list.
"""
pagination_required = (not cl.show_all or not cl.can_show_all) and cl.multi_page
page_range = (
cl.paginator.get_elided_page_range(cl.page_num) if pagination_required else []
)
need_show_all_link = cl.can_show_all and not cl.show_all and cl.multi_page
return {
"cl": cl,
"pagination_required": pagination_required,
"show_all_url": need_show_all_link and cl.get_query_string({ALL_VAR: ""}),
"page_range": page_range,
"ALL_VAR": ALL_VAR,
"1": 1,
}
@register.tag(name="pagination")
def pagination_tag(parser, token):
return InclusionAdminNode(
"pagination",
parser,
token,
func=pagination,
template_name="pagination.html",
takes_context=False,
)
def result_headers(cl):
"""
Generate the list column headers.
"""
ordering_field_columns = cl.get_ordering_field_columns()
for i, field_name in enumerate(cl.list_display):
text, attr = label_for_field(
field_name, cl.model, model_admin=cl.model_admin, return_attr=True
)
is_field_sortable = cl.sortable_by is None or field_name in cl.sortable_by
if attr:
field_name = _coerce_field_name(field_name, i)
# Potentially not sortable
# if the field is the action checkbox: no sorting and special class
if field_name == "action_checkbox":
aria_label = _("Select all objects on this page for an action")
yield {
"text": SafeString(
f'<input type="checkbox" id="action-toggle" '
f'aria-label="{aria_label}">'
),
"class_attrib": SafeString(' class="action-checkbox-column"'),
"sortable": False,
}
continue
admin_order_field = getattr(attr, "admin_order_field", None)
# Set ordering for attr that is a property, if defined.
if isinstance(attr, property) and hasattr(attr, "fget"):
admin_order_field = getattr(attr.fget, "admin_order_field", None)
if not admin_order_field and LOOKUP_SEP not in field_name:
is_field_sortable = False
if not is_field_sortable:
# Not sortable
yield {
"text": text,
"class_attrib": format_html(' class="column-{}"', field_name),
"sortable": False,
}
continue
# OK, it is sortable if we got this far
th_classes = ["sortable", "column-{}".format(field_name)]
order_type = ""
new_order_type = "asc"
sort_priority = 0
# Is it currently being sorted on?
is_sorted = i in ordering_field_columns
if is_sorted:
order_type = ordering_field_columns.get(i).lower()
sort_priority = list(ordering_field_columns).index(i) + 1
th_classes.append("sorted %sending" % order_type)
new_order_type = {"asc": "desc", "desc": "asc"}[order_type]
# build new ordering param
o_list_primary = [] # URL for making this field the primary sort
o_list_remove = [] # URL for removing this field from sort
o_list_toggle = [] # URL for toggling order type for this field
def make_qs_param(t, n):
return ("-" if t == "desc" else "") + str(n)
for j, ot in ordering_field_columns.items():
if j == i: # Same column
param = make_qs_param(new_order_type, j)
# We want clicking on this header to bring the ordering to the
# front
o_list_primary.insert(0, param)
o_list_toggle.append(param)
# o_list_remove - omit
else:
param = make_qs_param(ot, j)
o_list_primary.append(param)
o_list_toggle.append(param)
o_list_remove.append(param)
if i not in ordering_field_columns:
o_list_primary.insert(0, make_qs_param(new_order_type, i))
yield {
"text": text,
"sortable": True,
"sorted": is_sorted,
"ascending": order_type == "asc",
"sort_priority": sort_priority,
"url_primary": cl.get_query_string({ORDER_VAR: ".".join(o_list_primary)}),
"url_remove": cl.get_query_string({ORDER_VAR: ".".join(o_list_remove)}),
"url_toggle": cl.get_query_string({ORDER_VAR: ".".join(o_list_toggle)}),
"class_attrib": (
format_html(' class="{}"', " ".join(th_classes)) if th_classes else ""
),
}
def _boolean_icon(field_val):
icon_url = static(
"admin/img/icon-%s.svg" % {True: "yes", False: "no", None: "unknown"}[field_val]
)
return format_html('<img src="{}" alt="{}">', icon_url, field_val)
def _coerce_field_name(field_name, field_index):
"""
Coerce a field_name (which may be a callable) to a string.
"""
if callable(field_name):
if field_name.__name__ == "<lambda>":
return "lambda" + str(field_index)
else:
return field_name.__name__
return field_name
def items_for_result(cl, result, form):
"""
Generate the actual list of data.
"""
def link_in_col(is_first, field_name, cl):
if cl.list_display_links is None:
return False
if is_first and not cl.list_display_links:
return True
return field_name in cl.list_display_links
first = True
pk = cl.lookup_opts.pk.attname
for field_index, field_name in enumerate(cl.list_display):
empty_value_display = cl.model_admin.get_empty_value_display()
row_classes = ["field-%s" % _coerce_field_name(field_name, field_index)]
link_to_changelist = link_in_col(first, field_name, cl)
try:
f, attr, value = lookup_field(field_name, result, cl.model_admin)
except ObjectDoesNotExist:
result_repr = empty_value_display
else:
empty_value_display = getattr(
attr, "empty_value_display", empty_value_display
)
if isinstance(value, str) and value.strip() == "":
value = ""
if f is None or f.auto_created:
if field_name == "action_checkbox":
row_classes = ["action-checkbox"]
boolean = getattr(attr, "boolean", False)
# Set boolean for attr that is a property, if defined.
if isinstance(attr, property) and hasattr(attr, "fget"):
boolean = getattr(attr.fget, "boolean", False)
result_repr = display_for_value(value, empty_value_display, boolean)
if isinstance(value, (datetime.date, datetime.time)):
row_classes.append("nowrap")
else:
if isinstance(f.remote_field, models.ManyToOneRel):
field_val = getattr(result, f.name)
if field_val is None:
result_repr = empty_value_display
else:
result_repr = field_val
else:
result_repr = display_for_field(
value,
f,
empty_value_display,
avoid_link=link_to_changelist,
)
if isinstance(
f, (models.DateField, models.TimeField, models.ForeignKey)
):
row_classes.append("nowrap")
row_class = SafeString(' class="%s"' % " ".join(row_classes))
# If list_display_links not defined, add the link tag to the first
# field
if link_to_changelist:
table_tag = "th" if first else "td"
first = False
# Display link to the result's change_view if the url exists, else
# display just the result's representation.
try:
url = cl.url_for_result(result)
except NoReverseMatch:
link_or_text = result_repr
else:
url = add_preserved_filters(
{"preserved_filters": cl.preserved_filters, "opts": cl.opts}, url
)
# Convert the pk to something that can be used in JavaScript.
# Problem cases are non-ASCII strings.
if cl.to_field:
attr = str(cl.to_field)
else:
attr = pk
value = result.serializable_value(attr)
link_or_text = format_html(
'<a href="{}"{}>{}</a>',
url,
(
format_html(' data-popup-opener="{}"', value)
if cl.is_popup
else ""
),
result_repr,
)
yield format_html(
"<{}{}>{}</{}>", table_tag, row_class, link_or_text, table_tag
)
else:
# By default the fields come from ModelAdmin.list_editable, but if
# we pull the fields out of the form instead of list_editable
# custom admins can provide fields on a per request basis
if (
form
and field_name in form.fields
and not (
field_name == cl.model._meta.pk.name
and form[cl.model._meta.pk.name].is_hidden
)
):
bf = form[field_name]
result_repr = mark_safe(str(bf.errors) + str(bf))
yield format_html("<td{}>{}</td>", row_class, result_repr)
if form and not form[cl.model._meta.pk.name].is_hidden:
yield format_html("<td>{}</td>", form[cl.model._meta.pk.name])
class ResultList(list):
"""
Wrapper class used to return items in a list_editable changelist, annotated
with the form object for error reporting purposes. Needed to maintain
backwards compatibility with existing admin templates.
"""
def __init__(self, form, *items):
self.form = form
super().__init__(*items)
def results(cl):
if cl.formset:
for res, form in zip(cl.result_list, cl.formset.forms):
yield ResultList(form, items_for_result(cl, res, form))
else:
for res in cl.result_list:
yield ResultList(None, items_for_result(cl, res, None))
def result_hidden_fields(cl):
if cl.formset:
for res, form in zip(cl.result_list, cl.formset.forms):
if form[cl.model._meta.pk.name].is_hidden:
yield mark_safe(form[cl.model._meta.pk.name])
def result_list(cl):
"""
Display the headers and data list together.
"""
headers = list(result_headers(cl))
num_sorted_fields = 0
for h in headers:
if h["sortable"] and h["sorted"]:
num_sorted_fields += 1
return {
"cl": cl,
"result_hidden_fields": list(result_hidden_fields(cl)),
"result_headers": headers,
"num_sorted_fields": num_sorted_fields,
"results": list(results(cl)),
}
@register.tag(name="result_list")
def result_list_tag(parser, token):
return InclusionAdminNode(
"result_list",
parser,
token,
func=result_list,
template_name="change_list_results.html",
takes_context=False,
)
def date_hierarchy(cl):
"""
Display the date hierarchy for date drill-down functionality.
"""
if cl.date_hierarchy:
field_name = cl.date_hierarchy
field = get_fields_from_path(cl.model, field_name)[-1]
field_verbose_name = field.verbose_name
if isinstance(field, models.DateTimeField):
dates_or_datetimes = "datetimes"
else:
dates_or_datetimes = "dates"
year_field = "%s__year" % field_name
month_field = "%s__month" % field_name
day_field = "%s__day" % field_name
field_generic = "%s__" % field_name
year_lookup = cl.params.get(year_field)
month_lookup = cl.params.get(month_field)
day_lookup = cl.params.get(day_field)
def link(filters):
return cl.get_query_string(filters, [field_generic])
if not (year_lookup or month_lookup or day_lookup):
# select appropriate start level
date_range = cl.queryset.aggregate(
first=models.Min(field_name), last=models.Max(field_name)
)
if date_range["first"] and date_range["last"]:
if dates_or_datetimes == "datetimes":
date_range = {
k: timezone.localtime(v) if timezone.is_aware(v) else v
for k, v in date_range.items()
}
if date_range["first"].year == date_range["last"].year:
year_lookup = date_range["first"].year
if date_range["first"].month == date_range["last"].month:
month_lookup = date_range["first"].month
if year_lookup and month_lookup and day_lookup:
day = datetime.date(int(year_lookup), int(month_lookup), int(day_lookup))
return {
"show": True,
"back": {
"link": link({year_field: year_lookup, month_field: month_lookup}),
"title": capfirst(formats.date_format(day, "YEAR_MONTH_FORMAT")),
},
"choices": [
{"title": capfirst(formats.date_format(day, "MONTH_DAY_FORMAT"))}
],
"field_name": field_verbose_name,
}
elif year_lookup and month_lookup:
days = getattr(cl.queryset, dates_or_datetimes)(field_name, "day")
return {
"show": True,
"back": {
"link": link({year_field: year_lookup}),
"title": str(year_lookup),
},
"choices": [
{
"link": link(
{
year_field: year_lookup,
month_field: month_lookup,
day_field: day.day,
}
),
"title": capfirst(formats.date_format(day, "MONTH_DAY_FORMAT")),
}
for day in days
],
"field_name": field_verbose_name,
}
elif year_lookup:
months = getattr(cl.queryset, dates_or_datetimes)(field_name, "month")
return {
"show": True,
"back": {"link": link({}), "title": _("All dates")},
"choices": [
{
"link": link(
{year_field: year_lookup, month_field: month.month}
),
"title": capfirst(
formats.date_format(month, "YEAR_MONTH_FORMAT")
),
}
for month in months
],
"field_name": field_verbose_name,
}
else:
years = getattr(cl.queryset, dates_or_datetimes)(field_name, "year")
return {
"show": True,
"back": None,
"choices": [
{
"link": link({year_field: str(year.year)}),
"title": str(year.year),
}
for year in years
],
"field_name": field_verbose_name,
}
@register.tag(name="date_hierarchy")
def date_hierarchy_tag(parser, token):
return InclusionAdminNode(
"date_hierarchy",
parser,
token,
func=date_hierarchy,
template_name="date_hierarchy.html",
takes_context=False,
)
def search_form(cl):
"""
Display a search form for searching the list.
"""
return {
"cl": cl,
"show_result_count": cl.result_count != cl.full_result_count,
"search_var": SEARCH_VAR,
"is_popup_var": IS_POPUP_VAR,
"is_facets_var": IS_FACETS_VAR,
}
@register.tag(name="search_form")
def search_form_tag(parser, token):
return InclusionAdminNode(
"search_form",
parser,
token,
func=search_form,
template_name="search_form.html",
takes_context=False,
)
@register.simple_tag
def admin_list_filter(cl, spec):
tpl = get_template(spec.template)
return tpl.render(
{
"title": spec.title,
"choices": list(spec.choices(cl)),
"spec": spec,
}
)
def admin_actions(context):
"""
Track the number of times the action field has been rendered on the page,
so we know which value to use.
"""
context["action_index"] = context.get("action_index", -1) + 1
return context
@register.tag(name="admin_actions")
def admin_actions_tag(parser, token):
return InclusionAdminNode(
"admin_actions", parser, token, func=admin_actions, template_name="actions.html"
)
@register.tag(name="change_list_object_tools")
def change_list_object_tools_tag(parser, token):
"""Display the row of change list object tools."""
return InclusionAdminNode(
"change_list_object_tools",
parser,
token,
func=lambda context: context,
template_name="change_list_object_tools.html",
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/templatetags/admin_modify.py | django/contrib/admin/templatetags/admin_modify.py | import json
from django import template
from django.template.context import Context
from .base import InclusionAdminNode
register = template.Library()
def prepopulated_fields_js(context):
"""
Create a list of prepopulated_fields that should render JavaScript for
the prepopulated fields for both the admin form and inlines.
"""
prepopulated_fields = []
if "adminform" in context:
prepopulated_fields.extend(context["adminform"].prepopulated_fields)
if "inline_admin_formsets" in context:
for inline_admin_formset in context["inline_admin_formsets"]:
for inline_admin_form in inline_admin_formset:
if inline_admin_form.original is None:
prepopulated_fields.extend(inline_admin_form.prepopulated_fields)
prepopulated_fields_json = []
for field in prepopulated_fields:
prepopulated_fields_json.append(
{
"id": "#%s" % field["field"].auto_id,
"name": field["field"].name,
"dependency_ids": [
"#%s" % dependency.auto_id for dependency in field["dependencies"]
],
"dependency_list": [
dependency.name for dependency in field["dependencies"]
],
"maxLength": field["field"].field.max_length or 50,
"allowUnicode": getattr(field["field"].field, "allow_unicode", False),
}
)
context.update(
{
"prepopulated_fields": prepopulated_fields,
"prepopulated_fields_json": json.dumps(prepopulated_fields_json),
}
)
return context
@register.tag(name="prepopulated_fields_js")
def prepopulated_fields_js_tag(parser, token):
return InclusionAdminNode(
"prepopulated_fields_js",
parser,
token,
func=prepopulated_fields_js,
template_name="prepopulated_fields_js.html",
)
def submit_row(context):
"""
Display the row of buttons for delete and save.
"""
add = context["add"]
change = context["change"]
is_popup = context["is_popup"]
save_as = context["save_as"]
show_save = context.get("show_save", True)
show_save_and_add_another = context.get("show_save_and_add_another", True)
show_save_and_continue = context.get("show_save_and_continue", True)
has_add_permission = context["has_add_permission"]
has_change_permission = context["has_change_permission"]
has_view_permission = context["has_view_permission"]
has_editable_inline_admin_formsets = context["has_editable_inline_admin_formsets"]
can_save = (
(has_change_permission and change)
or (has_add_permission and add)
or has_editable_inline_admin_formsets
)
can_save_and_add_another = (
has_add_permission
and not is_popup
and (not save_as or add)
and can_save
and show_save_and_add_another
)
can_save_and_continue = (
not is_popup and can_save and has_view_permission and show_save_and_continue
)
can_change = has_change_permission or has_editable_inline_admin_formsets
ctx = Context(context)
ctx.update(
{
"can_change": can_change,
"show_delete_link": (
not is_popup
and context["has_delete_permission"]
and change
and context.get("show_delete", True)
),
"show_save_as_new": not is_popup
and has_add_permission
and change
and save_as,
"show_save_and_add_another": can_save_and_add_another,
"show_save_and_continue": can_save_and_continue,
"show_save": show_save and can_save,
"show_close": not (show_save and can_save),
}
)
return ctx
@register.tag(name="submit_row")
def submit_row_tag(parser, token):
return InclusionAdminNode(
"submit_row", parser, token, func=submit_row, template_name="submit_line.html"
)
@register.tag(name="change_form_object_tools")
def change_form_object_tools_tag(parser, token):
"""Display the row of change form object tools."""
return InclusionAdminNode(
"change_form_object_tools",
parser,
token,
func=lambda context: context,
template_name="change_form_object_tools.html",
)
@register.filter
def cell_count(inline_admin_form):
"""Return the number of cells used in a tabular inline."""
count = 1 # Hidden cell with hidden 'id' field
for fieldset in inline_admin_form:
# Count all visible fields.
for line in fieldset:
for field in line:
try:
is_hidden = field.field.is_hidden
except AttributeError:
is_hidden = field.field["is_hidden"]
if not is_hidden:
count += 1
if inline_admin_form.formset.can_delete:
# Delete checkbox
count += 1
return count
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/templatetags/base.py | django/contrib/admin/templatetags/base.py | from inspect import getfullargspec
from django.template.exceptions import TemplateSyntaxError
from django.template.library import InclusionNode, parse_bits
from django.utils.inspect import lazy_annotations
class InclusionAdminNode(InclusionNode):
"""
Template tag that allows its template to be overridden per model, per app,
or globally.
"""
def __init__(self, name, parser, token, func, template_name, takes_context=True):
self.template_name = template_name
with lazy_annotations():
params, varargs, varkw, defaults, kwonly, kwonly_defaults, _ = (
getfullargspec(func)
)
if takes_context:
if params and params[0] == "context":
del params[0]
else:
function_name = func.__name__
raise TemplateSyntaxError(
f"{name!r} sets takes_context=True so {function_name!r} "
"must have a first argument of 'context'"
)
bits = token.split_contents()
args, kwargs = parse_bits(
parser,
bits[1:],
params,
varargs,
varkw,
defaults,
kwonly,
kwonly_defaults,
bits[0],
)
super().__init__(func, takes_context, args, kwargs, filename=None)
def render(self, context):
opts = context["opts"]
app_label = opts.app_label.lower()
object_name = opts.model_name
# Load template for this render call. (Setting self.filename isn't
# thread-safe.)
context.render_context[self] = context.template.engine.select_template(
[
"admin/%s/%s/%s" % (app_label, object_name, self.template_name),
"admin/%s/%s" % (app_label, self.template_name),
"admin/%s" % self.template_name,
]
)
return super().render(context)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/views/decorators.py | django/contrib/admin/views/decorators.py | from django.contrib.auth import REDIRECT_FIELD_NAME
from django.contrib.auth.decorators import user_passes_test
def staff_member_required(
view_func=None, redirect_field_name=REDIRECT_FIELD_NAME, login_url="admin:login"
):
"""
Decorator for views that checks that the user is logged in and is a staff
member, redirecting to the login page if necessary.
"""
actual_decorator = user_passes_test(
lambda u: u.is_active and u.is_staff,
login_url=login_url,
redirect_field_name=redirect_field_name,
)
if view_func:
return actual_decorator(view_func)
return actual_decorator
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/views/autocomplete.py | django/contrib/admin/views/autocomplete.py | from django.apps import apps
from django.contrib.admin.exceptions import NotRegistered
from django.core.exceptions import FieldDoesNotExist, PermissionDenied
from django.http import Http404, JsonResponse
from django.views.generic.list import BaseListView
class AutocompleteJsonView(BaseListView):
"""Handle AutocompleteWidget's AJAX requests for data."""
paginate_by = 20
admin_site = None
def get(self, request, *args, **kwargs):
"""
Return a JsonResponse with search results as defined in
serialize_result(), by default:
{
results: [{id: "123" text: "foo"}],
pagination: {more: true}
}
"""
(
self.term,
self.model_admin,
self.source_field,
to_field_name,
) = self.process_request(request)
if not self.has_perm(request):
raise PermissionDenied
self.object_list = self.get_queryset()
context = self.get_context_data()
return JsonResponse(
{
"results": [
self.serialize_result(obj, to_field_name)
for obj in context["object_list"]
],
"pagination": {"more": context["page_obj"].has_next()},
}
)
def serialize_result(self, obj, to_field_name):
"""
Convert the provided model object to a dictionary that is added to the
results list.
"""
return {"id": str(getattr(obj, to_field_name)), "text": str(obj)}
def get_paginator(self, *args, **kwargs):
"""Use the ModelAdmin's paginator."""
return self.model_admin.get_paginator(self.request, *args, **kwargs)
def get_queryset(self):
"""Return queryset based on ModelAdmin.get_search_results()."""
qs = self.model_admin.get_queryset(self.request)
qs = qs.complex_filter(self.source_field.get_limit_choices_to())
qs, search_use_distinct = self.model_admin.get_search_results(
self.request, qs, self.term
)
if search_use_distinct:
qs = qs.distinct()
return qs
def process_request(self, request):
"""
Validate request integrity, extract and return request parameters.
Since the subsequent view permission check requires the target model
admin, which is determined here, raise PermissionDenied if the
requested app, model or field are malformed.
Raise Http404 if the target model admin is not configured properly with
search_fields.
"""
term = request.GET.get("term", "")
try:
app_label = request.GET["app_label"]
model_name = request.GET["model_name"]
field_name = request.GET["field_name"]
except KeyError as e:
raise PermissionDenied from e
# Retrieve objects from parameters.
try:
source_model = apps.get_model(app_label, model_name)
except LookupError as e:
raise PermissionDenied from e
try:
source_field = source_model._meta.get_field(field_name)
except FieldDoesNotExist as e:
raise PermissionDenied from e
try:
remote_model = source_field.remote_field.model
except AttributeError as e:
raise PermissionDenied from e
try:
model_admin = self.admin_site.get_model_admin(remote_model)
except NotRegistered as e:
raise PermissionDenied from e
# Validate suitability of objects.
if not model_admin.get_search_fields(request):
raise Http404(
"%s must have search_fields for the autocomplete_view."
% type(model_admin).__qualname__
)
to_field_name = getattr(
source_field.remote_field, "field_name", remote_model._meta.pk.attname
)
to_field_name = remote_model._meta.get_field(to_field_name).attname
if not model_admin.to_field_allowed(request, to_field_name):
raise PermissionDenied
return term, model_admin, source_field, to_field_name
def has_perm(self, request, obj=None):
"""Check if user has permission to access the related model."""
return self.model_admin.has_view_permission(request, obj=obj)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/views/main.py | django/contrib/admin/views/main.py | from datetime import datetime, timedelta
from django import forms
from django.conf import settings
from django.contrib import messages
from django.contrib.admin import FieldListFilter
from django.contrib.admin.exceptions import (
DisallowedModelAdminLookup,
DisallowedModelAdminToField,
)
from django.contrib.admin.options import (
IS_FACETS_VAR,
IS_POPUP_VAR,
TO_FIELD_VAR,
IncorrectLookupParameters,
ShowFacets,
)
from django.contrib.admin.utils import (
build_q_object_from_lookup_parameters,
get_fields_from_path,
lookup_spawns_duplicates,
prepare_lookup_value,
quote,
)
from django.core.exceptions import (
FieldDoesNotExist,
ImproperlyConfigured,
SuspiciousOperation,
)
from django.core.paginator import InvalidPage
from django.db.models import F, Field, ManyToOneRel, OrderBy
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import Combinable
from django.urls import reverse
from django.utils.http import urlencode
from django.utils.timezone import make_aware
from django.utils.translation import gettext
# Changelist settings
ALL_VAR = "all"
ORDER_VAR = "o"
PAGE_VAR = "p"
SEARCH_VAR = "q"
ERROR_FLAG = "e"
IGNORED_PARAMS = (
ALL_VAR,
ORDER_VAR,
SEARCH_VAR,
IS_FACETS_VAR,
IS_POPUP_VAR,
TO_FIELD_VAR,
)
class ChangeListSearchForm(forms.Form):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Populate "fields" dynamically because SEARCH_VAR is a variable:
self.fields = {
SEARCH_VAR: forms.CharField(required=False, strip=False),
}
class ChangeList:
search_form_class = ChangeListSearchForm
def __init__(
self,
request,
model,
list_display,
list_display_links,
list_filter,
date_hierarchy,
search_fields,
list_select_related,
list_per_page,
list_max_show_all,
list_editable,
model_admin,
sortable_by,
search_help_text,
):
self.model = model
self.opts = model._meta
self.lookup_opts = self.opts
self.root_queryset = model_admin.get_queryset(request)
self.list_display = list_display
self.list_display_links = list_display_links
self.list_filter = list_filter
self.has_filters = None
self.has_active_filters = None
self.clear_all_filters_qs = None
self.date_hierarchy = date_hierarchy
self.search_fields = search_fields
self.list_select_related = list_select_related
self.list_per_page = list_per_page
self.list_max_show_all = list_max_show_all
self.model_admin = model_admin
self.preserved_filters = model_admin.get_preserved_filters(request)
self.sortable_by = sortable_by
self.search_help_text = search_help_text
# Get search parameters from the query string.
_search_form = self.search_form_class(request.GET)
if not _search_form.is_valid():
for error in _search_form.errors.values():
messages.error(request, ", ".join(error))
self.query = _search_form.cleaned_data.get(SEARCH_VAR) or ""
try:
self.page_num = int(request.GET.get(PAGE_VAR, 1))
except ValueError:
self.page_num = 1
self.show_all = ALL_VAR in request.GET
self.is_popup = IS_POPUP_VAR in request.GET
self.add_facets = model_admin.show_facets is ShowFacets.ALWAYS or (
model_admin.show_facets is ShowFacets.ALLOW and IS_FACETS_VAR in request.GET
)
self.is_facets_optional = model_admin.show_facets is ShowFacets.ALLOW
to_field = request.GET.get(TO_FIELD_VAR)
if to_field and not model_admin.to_field_allowed(request, to_field):
raise DisallowedModelAdminToField(
"The field %s cannot be referenced." % to_field
)
self.to_field = to_field
self.params = dict(request.GET.items())
self.filter_params = dict(request.GET.lists())
if PAGE_VAR in self.params:
del self.params[PAGE_VAR]
del self.filter_params[PAGE_VAR]
if ERROR_FLAG in self.params:
del self.params[ERROR_FLAG]
del self.filter_params[ERROR_FLAG]
self.remove_facet_link = self.get_query_string(remove=[IS_FACETS_VAR])
self.add_facet_link = self.get_query_string({IS_FACETS_VAR: True})
if self.is_popup:
self.list_editable = ()
else:
self.list_editable = list_editable
self.queryset = self.get_queryset(request)
self.get_results(request)
if self.is_popup:
title = gettext("Select %s")
elif self.model_admin.has_change_permission(request):
title = gettext("Select %s to change")
else:
title = gettext("Select %s to view")
self.title = title % self.opts.verbose_name
self.pk_attname = self.lookup_opts.pk.attname
def __repr__(self):
return "<%s: model=%s model_admin=%s>" % (
self.__class__.__qualname__,
self.model.__qualname__,
self.model_admin.__class__.__qualname__,
)
def get_filters_params(self, params=None):
"""
Return all params except IGNORED_PARAMS.
"""
params = params or self.filter_params
lookup_params = params.copy() # a dictionary of the query string
# Remove all the parameters that are globally and systematically
# ignored.
for ignored in IGNORED_PARAMS:
if ignored in lookup_params:
del lookup_params[ignored]
return lookup_params
def get_filters(self, request):
lookup_params = self.get_filters_params()
may_have_duplicates = False
has_active_filters = False
for key, value_list in lookup_params.items():
for value in value_list:
if not self.model_admin.lookup_allowed(key, value, request):
raise DisallowedModelAdminLookup(f"Filtering by {key} not allowed")
filter_specs = []
for list_filter in self.list_filter:
lookup_params_count = len(lookup_params)
if callable(list_filter):
# This is simply a custom list filter class.
spec = list_filter(request, lookup_params, self.model, self.model_admin)
else:
field_path = None
if isinstance(list_filter, (tuple, list)):
# This is a custom FieldListFilter class for a given field.
field, field_list_filter_class = list_filter
else:
# This is simply a field name, so use the default
# FieldListFilter class that has been registered for the
# type of the given field.
field, field_list_filter_class = list_filter, FieldListFilter.create
if not isinstance(field, Field):
field_path = field
field = get_fields_from_path(self.model, field_path)[-1]
spec = field_list_filter_class(
field,
request,
lookup_params,
self.model,
self.model_admin,
field_path=field_path,
)
# field_list_filter_class removes any lookup_params it
# processes. If that happened, check if duplicates should be
# removed.
if lookup_params_count > len(lookup_params):
may_have_duplicates |= lookup_spawns_duplicates(
self.lookup_opts,
field_path,
)
if spec and spec.has_output():
filter_specs.append(spec)
if lookup_params_count > len(lookup_params):
has_active_filters = True
if self.date_hierarchy:
# Create bounded lookup parameters so that the query is more
# efficient.
year = lookup_params.pop("%s__year" % self.date_hierarchy, None)
if year is not None:
month = lookup_params.pop("%s__month" % self.date_hierarchy, None)
day = lookup_params.pop("%s__day" % self.date_hierarchy, None)
try:
from_date = datetime(
int(year[-1]),
int(month[-1] if month is not None else 1),
int(day[-1] if day is not None else 1),
)
except ValueError as e:
raise IncorrectLookupParameters(e) from e
if day:
to_date = from_date + timedelta(days=1)
elif month:
# In this branch, from_date will always be the first of a
# month, so advancing 32 days gives the next month.
to_date = (from_date + timedelta(days=32)).replace(day=1)
else:
to_date = from_date.replace(year=from_date.year + 1)
if settings.USE_TZ:
from_date = make_aware(from_date)
to_date = make_aware(to_date)
lookup_params.update(
{
"%s__gte" % self.date_hierarchy: [from_date],
"%s__lt" % self.date_hierarchy: [to_date],
}
)
# At this point, all the parameters used by the various ListFilters
# have been removed from lookup_params, which now only contains other
# parameters passed via the query string. We now loop through the
# remaining parameters both to ensure that all the parameters are valid
# fields and to determine if at least one of them spawns duplicates. If
# the lookup parameters aren't real fields, then bail out.
try:
for key, value in lookup_params.items():
lookup_params[key] = prepare_lookup_value(key, value)
may_have_duplicates |= lookup_spawns_duplicates(self.lookup_opts, key)
return (
filter_specs,
bool(filter_specs),
lookup_params,
may_have_duplicates,
has_active_filters,
)
except FieldDoesNotExist as e:
raise IncorrectLookupParameters(e) from e
def get_query_string(self, new_params=None, remove=None):
if new_params is None:
new_params = {}
if remove is None:
remove = []
p = self.filter_params.copy()
for r in remove:
for k in list(p):
if k.startswith(r):
del p[k]
for k, v in new_params.items():
if v is None:
if k in p:
del p[k]
else:
p[k] = v
return "?%s" % urlencode(sorted(p.items()), doseq=True)
def get_results(self, request):
paginator = self.model_admin.get_paginator(
request, self.queryset, self.list_per_page
)
# Get the number of objects, with admin filters applied.
result_count = paginator.count
# Get the total number of objects, with no admin filters applied.
# Note this isn't necessarily the same as result_count in the case of
# no filtering. Filters defined in list_filters may still apply some
# default filtering which may be removed with query parameters.
if self.model_admin.show_full_result_count:
full_result_count = self.root_queryset.count()
else:
full_result_count = None
can_show_all = result_count <= self.list_max_show_all
multi_page = result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and can_show_all) or not multi_page:
result_list = self.queryset._clone()
else:
try:
result_list = paginator.page(self.page_num).object_list
except InvalidPage:
raise IncorrectLookupParameters
self.result_count = result_count
self.show_full_result_count = self.model_admin.show_full_result_count
# Admin actions are shown if there is at least one entry
# or if entries are not counted because show_full_result_count is
# disabled
self.show_admin_actions = not self.show_full_result_count or bool(
full_result_count
)
self.full_result_count = full_result_count
self.result_list = result_list
self.can_show_all = can_show_all
self.multi_page = multi_page
self.paginator = paginator
def _get_default_ordering(self):
ordering = []
if self.model_admin.ordering:
ordering = self.model_admin.ordering
elif self.lookup_opts.ordering:
ordering = self.lookup_opts.ordering
return ordering
def get_ordering_field(self, field_name):
"""
Return the proper model field name corresponding to the given
field_name to use for ordering. field_name may either be the name of a
proper model field, possibly across relations, or the name of a method
(on the admin or model) or a callable with the 'admin_order_field'
attribute. Return None if no proper model field name can be matched.
"""
try:
field = self.lookup_opts.get_field(field_name)
return field.name
except FieldDoesNotExist:
# See whether field_name is a name of a non-field
# that allows sorting.
if callable(field_name):
attr = field_name
elif hasattr(self.model_admin, field_name):
attr = getattr(self.model_admin, field_name)
else:
try:
attr = getattr(self.model, field_name)
except AttributeError:
if LOOKUP_SEP in field_name:
return field_name
raise
if isinstance(attr, property) and hasattr(attr, "fget"):
attr = attr.fget
return getattr(attr, "admin_order_field", None)
def get_ordering(self, request, queryset):
"""
Return the list of ordering fields for the change list.
First check the get_ordering() method in model admin, then check
the object's default ordering. Then, any manually-specified ordering
from the query string overrides anything. Finally, a deterministic
order is guaranteed by calling _get_deterministic_ordering() with the
constructed ordering.
"""
params = self.params
ordering = list(
self.model_admin.get_ordering(request) or self._get_default_ordering()
)
if params.get(ORDER_VAR):
# Clear ordering and used params
ordering = []
order_params = params[ORDER_VAR].split(".")
for p in order_params:
try:
none, pfx, idx = p.rpartition("-")
field_name = self.list_display[int(idx)]
order_field = self.get_ordering_field(field_name)
if not order_field:
continue # No 'admin_order_field', skip it
if isinstance(order_field, OrderBy):
if pfx == "-":
order_field = order_field.copy()
order_field.reverse_ordering()
ordering.append(order_field)
elif hasattr(order_field, "resolve_expression"):
# order_field is an expression.
ordering.append(
order_field.desc() if pfx == "-" else order_field.asc()
)
# reverse order if order_field has already "-" as prefix
elif pfx == "-" and order_field.startswith(pfx):
ordering.append(order_field.removeprefix(pfx))
else:
ordering.append(pfx + order_field)
except (IndexError, ValueError):
continue # Invalid ordering specified, skip it.
# Add the given query's ordering fields, if any.
ordering.extend(queryset.query.order_by)
return self._get_deterministic_ordering(ordering)
def _get_deterministic_ordering(self, ordering):
"""
Ensure a deterministic order across all database backends. Search for a
single field or unique together set of fields providing a total
ordering. If these are missing, augment the ordering with a descendant
primary key.
"""
ordering = list(ordering)
ordering_fields = set()
total_ordering_fields = {"pk"} | {
field.attname
for field in self.lookup_opts.fields
if field.unique and not field.null
}
for part in ordering:
# Search for single field providing a total ordering.
field_name = None
if isinstance(part, str):
field_name = part.lstrip("-")
elif isinstance(part, F):
field_name = part.name
elif isinstance(part, OrderBy) and isinstance(part.expression, F):
field_name = part.expression.name
if field_name:
# Normalize attname references by using get_field().
try:
field = self.lookup_opts.get_field(field_name)
except FieldDoesNotExist:
# Could be "?" for random ordering or a related field
# lookup. Skip this part of introspection for now.
continue
# Ordering by a related field name orders by the referenced
# model's ordering. Skip this part of introspection for now.
if field.remote_field and field_name == field.name:
continue
if field.attname in total_ordering_fields:
break
ordering_fields.add(field.attname)
else:
# No single total ordering field, try unique_together and total
# unique constraints.
constraint_field_names = (
*self.lookup_opts.unique_together,
*(
constraint.fields
for constraint in self.lookup_opts.total_unique_constraints
),
)
for field_names in constraint_field_names:
# Normalize attname references by using get_field().
fields = [
self.lookup_opts.get_field(field_name) for field_name in field_names
]
# Composite unique constraints containing a nullable column
# cannot ensure total ordering.
if any(field.null for field in fields):
continue
if ordering_fields.issuperset(field.attname for field in fields):
break
else:
# If no set of unique fields is present in the ordering, rely
# on the primary key to provide total ordering.
ordering.append("-pk")
return ordering
def get_ordering_field_columns(self):
"""
Return a dictionary of ordering field column numbers and asc/desc.
"""
# We must cope with more than one column having the same underlying
# sort field, so we base things on column numbers.
ordering = self._get_default_ordering()
ordering_fields = {}
if ORDER_VAR not in self.params:
# for ordering specified on ModelAdmin or model Meta, we don't know
# the right column numbers absolutely, because there might be more
# than one column associated with that ordering, so we guess.
for field in ordering:
if isinstance(field, (Combinable, OrderBy)):
if not isinstance(field, OrderBy):
field = field.asc()
if isinstance(field.expression, F):
order_type = "desc" if field.descending else "asc"
field = field.expression.name
else:
continue
elif field.startswith("-"):
field = field.removeprefix("-")
order_type = "desc"
else:
order_type = "asc"
for index, attr in enumerate(self.list_display):
if self.get_ordering_field(attr) == field:
ordering_fields[index] = order_type
break
else:
for p in self.params[ORDER_VAR].split("."):
none, pfx, idx = p.rpartition("-")
try:
idx = int(idx)
except ValueError:
continue # skip it
ordering_fields[idx] = "desc" if pfx == "-" else "asc"
return ordering_fields
def get_queryset(self, request, exclude_parameters=None):
# First, we collect all the declared list filters.
(
self.filter_specs,
self.has_filters,
remaining_lookup_params,
filters_may_have_duplicates,
self.has_active_filters,
) = self.get_filters(request)
# Then, we let every list filter modify the queryset to its liking.
qs = self.root_queryset
for filter_spec in self.filter_specs:
if (
exclude_parameters is None
or filter_spec.expected_parameters() != exclude_parameters
):
new_qs = filter_spec.queryset(request, qs)
if new_qs is not None:
qs = new_qs
try:
# Finally, we apply the remaining lookup parameters from the query
# string (i.e. those that haven't already been processed by the
# filters).
q_object = build_q_object_from_lookup_parameters(remaining_lookup_params)
qs = qs.filter(q_object)
except (SuspiciousOperation, ImproperlyConfigured):
# Allow certain types of errors to be re-raised as-is so that the
# caller can treat them in a special way.
raise
except Exception as e:
# Every other error is caught with a naked except, because we don't
# have any other way of validating lookup parameters. They might be
# invalid if the keyword arguments are incorrect, or if the values
# are not in the correct type, so we might get FieldError,
# ValueError, ValidationError, or ?.
raise IncorrectLookupParameters(e)
if not qs.query.select_related:
qs = self.apply_select_related(qs)
# Set ordering.
ordering = self.get_ordering(request, qs)
qs = qs.order_by(*ordering)
# Apply search results
qs, search_may_have_duplicates = self.model_admin.get_search_results(
request,
qs,
self.query,
)
# Set query string for clearing all filters.
self.clear_all_filters_qs = self.get_query_string(
new_params=remaining_lookup_params,
remove=self.get_filters_params(),
)
# Remove duplicates from results, if necessary
if filters_may_have_duplicates | search_may_have_duplicates:
return qs.distinct()
else:
return qs
def apply_select_related(self, qs):
if self.list_select_related is True:
return qs.select_related()
if self.list_select_related is False:
if self.has_related_field_in_list_display():
return qs.select_related()
if self.list_select_related:
return qs.select_related(*self.list_select_related)
return qs
def has_related_field_in_list_display(self):
for field_name in self.list_display:
try:
field = self.lookup_opts.get_field(field_name)
except FieldDoesNotExist:
pass
else:
if isinstance(field.remote_field, ManyToOneRel):
# <FK>_id field names don't require a join.
if field_name != field.attname:
return True
return False
def url_for_result(self, result):
pk = getattr(result, self.pk_attname)
return reverse(
"admin:%s_%s_change" % (self.opts.app_label, self.opts.model_name),
args=(quote(pk),),
current_app=self.model_admin.admin_site.name,
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/views/__init__.py | django/contrib/admin/views/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/migrations/0003_logentry_add_action_flag_choices.py | django/contrib/admin/migrations/0003_logentry_add_action_flag_choices.py | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("admin", "0002_logentry_remove_auto_add"),
]
# No database changes; adds choices to action_flag.
operations = [
migrations.AlterField(
model_name="logentry",
name="action_flag",
field=models.PositiveSmallIntegerField(
choices=[(1, "Addition"), (2, "Change"), (3, "Deletion")],
verbose_name="action flag",
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/migrations/0001_initial.py | django/contrib/admin/migrations/0001_initial.py | import django.contrib.admin.models
from django.conf import settings
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
("contenttypes", "__first__"),
]
operations = [
migrations.CreateModel(
name="LogEntry",
fields=[
(
"id",
models.AutoField(
verbose_name="ID",
serialize=False,
auto_created=True,
primary_key=True,
),
),
(
"action_time",
models.DateTimeField(auto_now=True, verbose_name="action time"),
),
(
"object_id",
models.TextField(null=True, verbose_name="object id", blank=True),
),
(
"object_repr",
models.CharField(max_length=200, verbose_name="object repr"),
),
(
"action_flag",
models.PositiveSmallIntegerField(verbose_name="action flag"),
),
(
"change_message",
models.TextField(verbose_name="change message", blank=True),
),
(
"content_type",
models.ForeignKey(
on_delete=models.SET_NULL,
blank=True,
null=True,
to="contenttypes.ContentType",
verbose_name="content type",
),
),
(
"user",
models.ForeignKey(
to=settings.AUTH_USER_MODEL,
on_delete=models.CASCADE,
verbose_name="user",
),
),
],
options={
"ordering": ["-action_time"],
"db_table": "django_admin_log",
"verbose_name": "log entry",
"verbose_name_plural": "log entries",
},
bases=(models.Model,),
managers=[
("objects", django.contrib.admin.models.LogEntryManager()),
],
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/migrations/0002_logentry_remove_auto_add.py | django/contrib/admin/migrations/0002_logentry_remove_auto_add.py | from django.db import migrations, models
from django.utils import timezone
class Migration(migrations.Migration):
dependencies = [
("admin", "0001_initial"),
]
# No database changes; removes auto_add and adds default/editable.
operations = [
migrations.AlterField(
model_name="logentry",
name="action_time",
field=models.DateTimeField(
verbose_name="action time",
default=timezone.now,
editable=False,
),
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admin/migrations/__init__.py | django/contrib/admin/migrations/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/humanize/__init__.py | django/contrib/humanize/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/humanize/apps.py | django/contrib/humanize/apps.py | from django.apps import AppConfig
from django.utils.translation import gettext_lazy as _
class HumanizeConfig(AppConfig):
name = "django.contrib.humanize"
verbose_name = _("Humanize")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/humanize/templatetags/humanize.py | django/contrib/humanize/templatetags/humanize.py | import re
from datetime import UTC, date, datetime
from decimal import Decimal, InvalidOperation
from django import template
from django.template import defaultfilters
from django.utils.formats import number_format
from django.utils.safestring import mark_safe
from django.utils.timezone import is_aware
from django.utils.translation import gettext as _
from django.utils.translation import (
gettext_lazy,
ngettext,
ngettext_lazy,
npgettext_lazy,
pgettext,
round_away_from_one,
)
register = template.Library()
@register.filter(is_safe=True)
def ordinal(value):
"""
Convert an integer to its ordinal as a string. 1 is '1st', 2 is '2nd',
3 is '3rd', etc. Works for any non-negative integer.
"""
try:
value = int(value)
except (TypeError, ValueError):
return value
if value < 0:
return str(value)
if value % 100 in (11, 12, 13):
# Translators: Ordinal format for 11 (11th), 12 (12th), and 13 (13th).
value = pgettext("ordinal 11, 12, 13", "{}th").format(value)
else:
templates = (
# Translators: Ordinal format when value ends with 0, e.g. 80th.
pgettext("ordinal 0", "{}th"),
# Translators: Ordinal format when value ends with 1, e.g. 81st,
# except 11.
pgettext("ordinal 1", "{}st"),
# Translators: Ordinal format when value ends with 2, e.g. 82nd,
# except 12.
pgettext("ordinal 2", "{}nd"),
# Translators: Ordinal format when value ends with 3, e.g. 83rd,
# except 13.
pgettext("ordinal 3", "{}rd"),
# Translators: Ordinal format when value ends with 4, e.g. 84th.
pgettext("ordinal 4", "{}th"),
# Translators: Ordinal format when value ends with 5, e.g. 85th.
pgettext("ordinal 5", "{}th"),
# Translators: Ordinal format when value ends with 6, e.g. 86th.
pgettext("ordinal 6", "{}th"),
# Translators: Ordinal format when value ends with 7, e.g. 87th.
pgettext("ordinal 7", "{}th"),
# Translators: Ordinal format when value ends with 8, e.g. 88th.
pgettext("ordinal 8", "{}th"),
# Translators: Ordinal format when value ends with 9, e.g. 89th.
pgettext("ordinal 9", "{}th"),
)
value = templates[value % 10].format(value)
# Mark value safe so i18n does not break with <sup> or <sub> see #19988
return mark_safe(value)
@register.filter(is_safe=True)
def intcomma(value, use_l10n=True):
"""
Convert an integer or float (or a string representation of either) to a
string containing commas every three digits. Format localization is
respected. For example, 3000 becomes '3,000' and 45000 becomes '45,000'.
"""
if use_l10n:
try:
if not isinstance(value, (float, Decimal)):
value = Decimal(value)
except (TypeError, ValueError, InvalidOperation):
return intcomma(value, False)
else:
return number_format(value, use_l10n=True, force_grouping=True)
result = str(value)
match = re.match(r"-?\d+", result)
if match:
prefix = match[0]
prefix_with_commas = re.sub(r"\d{3}", r"\g<0>,", prefix[::-1])[::-1]
# Remove a leading comma, if needed.
prefix_with_commas = re.sub(r"^(-?),", r"\1", prefix_with_commas)
result = prefix_with_commas + result[len(prefix) :]
return result
# A tuple of standard large number to their converters
intword_converters = (
(6, lambda number: ngettext("%(value)s million", "%(value)s million", number)),
(9, lambda number: ngettext("%(value)s billion", "%(value)s billion", number)),
(12, lambda number: ngettext("%(value)s trillion", "%(value)s trillion", number)),
(
15,
lambda number: ngettext(
"%(value)s quadrillion", "%(value)s quadrillion", number
),
),
(
18,
lambda number: ngettext(
"%(value)s quintillion", "%(value)s quintillion", number
),
),
(
21,
lambda number: ngettext("%(value)s sextillion", "%(value)s sextillion", number),
),
(
24,
lambda number: ngettext("%(value)s septillion", "%(value)s septillion", number),
),
(27, lambda number: ngettext("%(value)s octillion", "%(value)s octillion", number)),
(30, lambda number: ngettext("%(value)s nonillion", "%(value)s nonillion", number)),
(33, lambda number: ngettext("%(value)s decillion", "%(value)s decillion", number)),
(100, lambda number: ngettext("%(value)s googol", "%(value)s googol", number)),
)
@register.filter(is_safe=False)
def intword(value):
"""
Convert a large integer to a friendly text representation. Works best
for numbers over 1 million. For example, 1000000 becomes '1.0 million',
1200000 becomes '1.2 million' and '1200000000' becomes '1.2 billion'.
"""
try:
value = int(value)
except (TypeError, ValueError):
return value
abs_value = abs(value)
if abs_value < 1000000:
return value
for exponent, converter in intword_converters:
large_number = 10**exponent
if abs_value < large_number * 1000:
new_value = value / large_number
rounded_value = round_away_from_one(new_value)
return converter(abs(rounded_value)) % {
"value": defaultfilters.floatformat(new_value, 1),
}
return value
@register.filter(is_safe=True)
def apnumber(value):
"""
For numbers 1-9, return the number spelled out. Otherwise, return the
number. This follows Associated Press style.
"""
try:
value = int(value)
except (TypeError, ValueError):
return value
if not 0 < value < 10:
return value
return (
_("one"),
_("two"),
_("three"),
_("four"),
_("five"),
_("six"),
_("seven"),
_("eight"),
_("nine"),
)[value - 1]
# Perform the comparison in the default time zone when USE_TZ = True
# (unless a specific time zone has been applied with the |timezone filter).
@register.filter(expects_localtime=True)
def naturalday(value, arg=None):
"""
For date values that are tomorrow, today or yesterday compared to
present day return representing string. Otherwise, return a string
formatted according to settings.DATE_FORMAT.
"""
tzinfo = getattr(value, "tzinfo", None)
try:
value = date(value.year, value.month, value.day)
except AttributeError:
# Passed value wasn't a date object
return value
today = datetime.now(tzinfo).date()
delta = value - today
if delta.days == 0:
return _("today")
elif delta.days == 1:
return _("tomorrow")
elif delta.days == -1:
return _("yesterday")
return defaultfilters.date(value, arg)
# This filter doesn't require expects_localtime=True because it deals properly
# with both naive and aware datetimes. Therefore avoid the cost of conversion.
@register.filter
def naturaltime(value):
"""
For date and time values show how many seconds, minutes, or hours ago
compared to current timestamp return representing string.
"""
return NaturalTimeFormatter.string_for(value)
class NaturalTimeFormatter:
time_strings = {
# Translators: delta will contain a string like '2 months' or
# '1 month, 2 weeks'
"past-day": gettext_lazy("%(delta)s ago"),
# Translators: please keep a non-breaking space (U+00A0) between count
# and time unit.
"past-hour": ngettext_lazy("an hour ago", "%(count)s hours ago", "count"),
# Translators: please keep a non-breaking space (U+00A0) between count
# and time unit.
"past-minute": ngettext_lazy("a minute ago", "%(count)s minutes ago", "count"),
# Translators: please keep a non-breaking space (U+00A0) between count
# and time unit.
"past-second": ngettext_lazy("a second ago", "%(count)s seconds ago", "count"),
"now": gettext_lazy("now"),
# fmt: off
# fmt turned off to avoid black splitting the ngettext_lazy calls to
# multiple lines, as this results in gettext missing the 'Translators:'
# comments.
"future-second": ngettext_lazy(
# Translators: please keep a non-breaking space (U+00A0) between
# count and time unit.
"a second from now", "%(count)s seconds from now", "count"
),
"future-minute": ngettext_lazy(
# Translators: please keep a non-breaking space (U+00A0) between
# count and time unit.
"a minute from now", "%(count)s minutes from now", "count",
),
"future-hour": ngettext_lazy(
# Translators: please keep a non-breaking space (U+00A0) between
# count and time unit.
"an hour from now", "%(count)s hours from now", "count",
),
# fmt: on
# Translators: delta will contain a string like '2 months' or
# '1 month, 2 weeks'
"future-day": gettext_lazy("%(delta)s from now"),
}
past_substrings = {
# fmt: off
"year": npgettext_lazy(
# Translators: 'naturaltime-past' strings will be included in
# '%(delta)s ago'
"naturaltime-past", "%(num)d year", "%(num)d years", "num",
),
# fmt:on
"month": npgettext_lazy(
"naturaltime-past", "%(num)d month", "%(num)d months", "num"
),
"week": npgettext_lazy(
"naturaltime-past", "%(num)d week", "%(num)d weeks", "num"
),
"day": npgettext_lazy("naturaltime-past", "%(num)d day", "%(num)d days", "num"),
"hour": npgettext_lazy(
"naturaltime-past", "%(num)d hour", "%(num)d hours", "num"
),
"minute": npgettext_lazy(
"naturaltime-past", "%(num)d minute", "%(num)d minutes", "num"
),
}
future_substrings = {
# fmt: off
"year": npgettext_lazy(
# Translators: 'naturaltime-future' strings will be included in
# '%(delta)s from now'.
"naturaltime-future", "%(num)d year", "%(num)d years", "num",
),
# fmt: on
"month": npgettext_lazy(
"naturaltime-future", "%(num)d month", "%(num)d months", "num"
),
"week": npgettext_lazy(
"naturaltime-future", "%(num)d week", "%(num)d weeks", "num"
),
"day": npgettext_lazy(
"naturaltime-future", "%(num)d day", "%(num)d days", "num"
),
"hour": npgettext_lazy(
"naturaltime-future", "%(num)d hour", "%(num)d hours", "num"
),
"minute": npgettext_lazy(
"naturaltime-future", "%(num)d minute", "%(num)d minutes", "num"
),
}
@classmethod
def string_for(cls, value):
if not isinstance(value, date): # datetime is a subclass of date
return value
now = datetime.now(UTC if is_aware(value) else None)
if value < now:
delta = now - value
if delta.days != 0:
return cls.time_strings["past-day"] % {
"delta": defaultfilters.timesince(
value, now, time_strings=cls.past_substrings
),
}
elif delta.seconds == 0:
return cls.time_strings["now"]
elif delta.seconds < 60:
return cls.time_strings["past-second"] % {"count": delta.seconds}
elif delta.seconds // 60 < 60:
count = delta.seconds // 60
return cls.time_strings["past-minute"] % {"count": count}
else:
count = delta.seconds // 60 // 60
return cls.time_strings["past-hour"] % {"count": count}
else:
delta = value - now
if delta.days != 0:
return cls.time_strings["future-day"] % {
"delta": defaultfilters.timeuntil(
value, now, time_strings=cls.future_substrings
),
}
elif delta.seconds == 0:
return cls.time_strings["now"]
elif delta.seconds < 60:
return cls.time_strings["future-second"] % {"count": delta.seconds}
elif delta.seconds // 60 < 60:
count = delta.seconds // 60
return cls.time_strings["future-minute"] % {"count": count}
else:
count = delta.seconds // 60 // 60
return cls.time_strings["future-hour"] % {"count": count}
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/humanize/templatetags/__init__.py | django/contrib/humanize/templatetags/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/api.py | django/contrib/messages/api.py | from django.contrib.messages import constants
from django.contrib.messages.storage import default_storage
__all__ = (
"add_message",
"get_messages",
"get_level",
"set_level",
"debug",
"info",
"success",
"warning",
"error",
"MessageFailure",
)
class MessageFailure(Exception):
pass
def add_message(request, level, message, extra_tags="", fail_silently=False):
"""
Attempt to add a message to the request using the 'messages' app.
"""
try:
messages = request._messages
except AttributeError:
if not hasattr(request, "META"):
raise TypeError(
"add_message() argument must be an HttpRequest object, not "
"'%s'." % request.__class__.__name__
)
if not fail_silently:
raise MessageFailure(
"You cannot add messages without installing "
"django.contrib.messages.middleware.MessageMiddleware"
)
else:
return messages.add(level, message, extra_tags)
def get_messages(request):
"""
Return the message storage on the request if it exists, otherwise return
an empty list.
"""
return getattr(request, "_messages", [])
def get_level(request):
"""
Return the minimum level of messages to be recorded.
The default level is the ``MESSAGE_LEVEL`` setting. If this is not found,
use the ``INFO`` level.
"""
storage = getattr(request, "_messages", default_storage(request))
return storage.level
def set_level(request, level):
"""
Set the minimum level of messages to be recorded, and return ``True`` if
the level was recorded successfully.
If set to ``None``, use the default level (see the get_level() function).
"""
if not hasattr(request, "_messages"):
return False
request._messages.level = level
return True
def debug(request, message, extra_tags="", fail_silently=False):
"""Add a message with the ``DEBUG`` level."""
add_message(
request,
constants.DEBUG,
message,
extra_tags=extra_tags,
fail_silently=fail_silently,
)
def info(request, message, extra_tags="", fail_silently=False):
"""Add a message with the ``INFO`` level."""
add_message(
request,
constants.INFO,
message,
extra_tags=extra_tags,
fail_silently=fail_silently,
)
def success(request, message, extra_tags="", fail_silently=False):
"""Add a message with the ``SUCCESS`` level."""
add_message(
request,
constants.SUCCESS,
message,
extra_tags=extra_tags,
fail_silently=fail_silently,
)
def warning(request, message, extra_tags="", fail_silently=False):
"""Add a message with the ``WARNING`` level."""
add_message(
request,
constants.WARNING,
message,
extra_tags=extra_tags,
fail_silently=fail_silently,
)
def error(request, message, extra_tags="", fail_silently=False):
"""Add a message with the ``ERROR`` level."""
add_message(
request,
constants.ERROR,
message,
extra_tags=extra_tags,
fail_silently=fail_silently,
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/views.py | django/contrib/messages/views.py | from django.contrib import messages
class SuccessMessageMixin:
"""
Add a success message on successful form submission.
"""
success_message = ""
def form_valid(self, form):
response = super().form_valid(form)
success_message = self.get_success_message(form.cleaned_data)
if success_message:
messages.success(self.request, success_message)
return response
def get_success_message(self, cleaned_data):
return self.success_message % cleaned_data
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/middleware.py | django/contrib/messages/middleware.py | from django.conf import settings
from django.contrib.messages.storage import default_storage
from django.utils.deprecation import MiddlewareMixin
class MessageMiddleware(MiddlewareMixin):
"""
Middleware that handles temporary messages.
"""
def process_request(self, request):
request._messages = default_storage(request)
def process_response(self, request, response):
"""
Update the storage backend (i.e., save the messages).
Raise ValueError if not all messages could be stored and DEBUG is True.
"""
# A higher middleware layer may return a request which does not contain
# messages storage, so make no assumption that it will be there.
if hasattr(request, "_messages"):
unstored_messages = request._messages.update(response)
if unstored_messages and settings.DEBUG:
raise ValueError("Not all temporary messages could be stored.")
return response
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/constants.py | django/contrib/messages/constants.py | DEBUG = 10
INFO = 20
SUCCESS = 25
WARNING = 30
ERROR = 40
DEFAULT_TAGS = {
DEBUG: "debug",
INFO: "info",
SUCCESS: "success",
WARNING: "warning",
ERROR: "error",
}
DEFAULT_LEVELS = {
"DEBUG": DEBUG,
"INFO": INFO,
"SUCCESS": SUCCESS,
"WARNING": WARNING,
"ERROR": ERROR,
}
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/context_processors.py | django/contrib/messages/context_processors.py | from django.contrib.messages.api import get_messages
from django.contrib.messages.constants import DEFAULT_LEVELS
def messages(request):
"""
Return a lazy 'messages' context variable as well as
'DEFAULT_MESSAGE_LEVELS'.
"""
return {
"messages": get_messages(request),
"DEFAULT_MESSAGE_LEVELS": DEFAULT_LEVELS,
}
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/utils.py | django/contrib/messages/utils.py | from django.conf import settings
from django.contrib.messages import constants
def get_level_tags():
"""
Return the message level tags.
"""
return {
**constants.DEFAULT_TAGS,
**getattr(settings, "MESSAGE_TAGS", {}),
}
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/__init__.py | django/contrib/messages/__init__.py | from django.contrib.messages.api import * # NOQA
from django.contrib.messages.constants import * # NOQA
from django.contrib.messages.storage.base import Message # NOQA
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/apps.py | django/contrib/messages/apps.py | from django.apps import AppConfig
from django.contrib.messages.storage import base
from django.contrib.messages.utils import get_level_tags
from django.core.signals import setting_changed
from django.utils.functional import SimpleLazyObject
from django.utils.translation import gettext_lazy as _
def update_level_tags(setting, **kwargs):
if setting == "MESSAGE_TAGS":
base.LEVEL_TAGS = SimpleLazyObject(get_level_tags)
class MessagesConfig(AppConfig):
name = "django.contrib.messages"
verbose_name = _("Messages")
def ready(self):
setting_changed.connect(update_level_tags)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/test.py | django/contrib/messages/test.py | from .api import get_messages
# Make unittest ignore frames in this module when reporting failures.
__unittest = True
class MessagesTestMixin:
def assertMessages(self, response, expected_messages, *, ordered=True):
request_messages = list(get_messages(response.wsgi_request))
assertion = self.assertEqual if ordered else self.assertCountEqual
assertion(request_messages, expected_messages)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/storage/fallback.py | django/contrib/messages/storage/fallback.py | from django.contrib.messages.storage.base import BaseStorage
from django.contrib.messages.storage.cookie import CookieStorage
from django.contrib.messages.storage.session import SessionStorage
class FallbackStorage(BaseStorage):
"""
Try to store all messages in the first backend. Store any unstored
messages in each subsequent backend.
"""
storage_classes = (CookieStorage, SessionStorage)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.storages = [
storage_class(*args, **kwargs) for storage_class in self.storage_classes
]
self._used_storages = set()
def _get(self, *args, **kwargs):
"""
Get a single list of messages from all storage backends.
"""
all_messages = []
for storage in self.storages:
messages, all_retrieved = storage._get()
# If the backend hasn't been used, no more retrieval is necessary.
if messages is None:
break
if messages:
self._used_storages.add(storage)
all_messages.extend(messages)
# If this storage class contained all the messages, no further
# retrieval is necessary
if all_retrieved:
break
return all_messages, all_retrieved
def _store(self, messages, response, *args, **kwargs):
"""
Store the messages and return any unstored messages after trying all
backends.
For each storage backend, any messages not stored are passed on to the
next backend.
"""
for storage in self.storages:
if messages:
messages = storage._store(messages, response, remove_oldest=False)
# Even if there are no more messages, continue iterating to ensure
# storages which contained messages are flushed.
elif storage in self._used_storages:
storage._store([], response)
self._used_storages.remove(storage)
return messages
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/storage/cookie.py | django/contrib/messages/storage/cookie.py | import binascii
import json
from django.conf import settings
from django.contrib.messages.storage.base import BaseStorage, Message
from django.core import signing
from django.http import SimpleCookie
from django.utils.safestring import SafeData, mark_safe
class MessageEncoder(json.JSONEncoder):
"""
Compactly serialize instances of the ``Message`` class as JSON.
"""
message_key = "__json_message"
def default(self, obj):
if isinstance(obj, Message):
# Using 0/1 here instead of False/True to produce more compact json
is_safedata = 1 if isinstance(obj.message, SafeData) else 0
message = [self.message_key, is_safedata, obj.level, obj.message]
if obj.extra_tags is not None:
message.append(obj.extra_tags)
return message
return super().default(obj)
class MessageDecoder(json.JSONDecoder):
"""
Decode JSON that includes serialized ``Message`` instances.
"""
def process_messages(self, obj):
if isinstance(obj, list) and obj:
if obj[0] == MessageEncoder.message_key:
if obj[1]:
obj[3] = mark_safe(obj[3])
return Message(*obj[2:])
return [self.process_messages(item) for item in obj]
if isinstance(obj, dict):
return {key: self.process_messages(value) for key, value in obj.items()}
return obj
def decode(self, s, **kwargs):
decoded = super().decode(s, **kwargs)
return self.process_messages(decoded)
class MessagePartSerializer:
def dumps(self, obj):
return [
json.dumps(
o,
separators=(",", ":"),
cls=MessageEncoder,
)
for o in obj
]
class MessagePartGatherSerializer:
def dumps(self, obj):
"""
The parameter is an already serialized list of Message objects. No need
to serialize it again, only join the list together and encode it.
"""
return ("[" + ",".join(obj) + "]").encode("latin-1")
class MessageSerializer:
def loads(self, data):
return json.loads(data.decode("latin-1"), cls=MessageDecoder)
class CookieStorage(BaseStorage):
"""
Store messages in a cookie.
"""
cookie_name = "messages"
# uwsgi's default configuration enforces a maximum size of 4kb for all the
# HTTP headers. In order to leave some room for other cookies and headers,
# restrict the session cookie to 1/2 of 4kb. See #18781.
max_cookie_size = 2048
not_finished = "__messagesnotfinished__"
not_finished_json = json.dumps("__messagesnotfinished__")
key_salt = "django.contrib.messages"
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.signer = signing.get_cookie_signer(salt=self.key_salt)
def _get(self, *args, **kwargs):
"""
Retrieve a list of messages from the messages cookie. If the
not_finished sentinel value is found at the end of the message list,
remove it and return a result indicating that not all messages were
retrieved by this storage.
"""
data = self.request.COOKIES.get(self.cookie_name)
messages = self._decode(data)
all_retrieved = not (messages and messages[-1] == self.not_finished)
if messages and not all_retrieved:
# remove the sentinel value
messages.pop()
return messages, all_retrieved
def _update_cookie(self, encoded_data, response):
"""
Either set the cookie with the encoded data if there is any data to
store, or delete the cookie.
"""
if encoded_data:
response.set_cookie(
self.cookie_name,
encoded_data,
domain=settings.SESSION_COOKIE_DOMAIN,
secure=settings.SESSION_COOKIE_SECURE or None,
httponly=settings.SESSION_COOKIE_HTTPONLY or None,
samesite=settings.SESSION_COOKIE_SAMESITE,
)
else:
response.delete_cookie(
self.cookie_name,
domain=settings.SESSION_COOKIE_DOMAIN,
samesite=settings.SESSION_COOKIE_SAMESITE,
)
def _store(self, messages, response, remove_oldest=True, *args, **kwargs):
"""
Store the messages to a cookie and return a list of any messages which
could not be stored.
If the encoded data is larger than ``max_cookie_size``, remove
messages until the data fits (these are the messages which are
returned), and add the not_finished sentinel value to indicate as much.
"""
unstored_messages = []
serialized_messages = MessagePartSerializer().dumps(messages)
encoded_data = self._encode_parts(serialized_messages)
if self.max_cookie_size:
# data is going to be stored eventually by SimpleCookie, which
# adds its own overhead, which we must account for.
cookie = SimpleCookie() # create outside the loop
def is_too_large_for_cookie(data):
return data and len(cookie.value_encode(data)[1]) > self.max_cookie_size
def compute_msg(some_serialized_msg):
return self._encode_parts(
[*some_serialized_msg, self.not_finished_json],
encode_empty=True,
)
if is_too_large_for_cookie(encoded_data):
if remove_oldest:
idx = bisect_keep_right(
serialized_messages,
fn=lambda m: is_too_large_for_cookie(compute_msg(m)),
)
unstored_messages = messages[:idx]
encoded_data = compute_msg(serialized_messages[idx:])
else:
idx = bisect_keep_left(
serialized_messages,
fn=lambda m: is_too_large_for_cookie(compute_msg(m)),
)
unstored_messages = messages[idx:]
encoded_data = compute_msg(serialized_messages[:idx])
self._update_cookie(encoded_data, response)
return unstored_messages
def _encode_parts(self, messages, encode_empty=False):
"""
Return an encoded version of the serialized messages list which can be
stored as plain text.
Since the data will be retrieved from the client-side, the encoded data
also contains a hash to ensure that the data was not tampered with.
"""
if messages or encode_empty:
return self.signer.sign_object(
messages, serializer=MessagePartGatherSerializer, compress=True
)
def _encode(self, messages, encode_empty=False):
"""
Return an encoded version of the messages list which can be stored as
plain text.
Proxies MessagePartSerializer.dumps and _encoded_parts.
"""
serialized_messages = MessagePartSerializer().dumps(messages)
return self._encode_parts(serialized_messages, encode_empty=encode_empty)
def _decode(self, data):
"""
Safely decode an encoded text stream back into a list of messages.
If the encoded text stream contained an invalid hash or was in an
invalid format, return None.
"""
if not data:
return None
try:
return self.signer.unsign_object(data, serializer=MessageSerializer)
except (signing.BadSignature, binascii.Error, json.JSONDecodeError):
pass
# Mark the data as used (so it gets removed) since something was wrong
# with the data.
self.used = True
return None
def bisect_keep_left(a, fn):
"""
Find the index of the first element from the start of the array that
verifies the given condition.
The function is applied from the start of the array to the pivot.
"""
lo = 0
hi = len(a)
while lo < hi:
mid = (lo + hi) // 2
if fn(a[: mid + 1]):
hi = mid
else:
lo = mid + 1
return lo
def bisect_keep_right(a, fn):
"""
Find the index of the first element from the end of the array that verifies
the given condition.
The function is applied from the pivot to the end of array.
"""
lo = 0
hi = len(a)
while lo < hi:
mid = (lo + hi) // 2
if fn(a[mid:]):
lo = mid + 1
else:
hi = mid
return lo
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/storage/__init__.py | django/contrib/messages/storage/__init__.py | from django.conf import settings
from django.utils.module_loading import import_string
def default_storage(request):
"""
Callable with the same interface as the storage classes.
This isn't just default_storage = import_string(settings.MESSAGE_STORAGE)
to avoid accessing the settings at the module level.
"""
return import_string(settings.MESSAGE_STORAGE)(request)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/storage/session.py | django/contrib/messages/storage/session.py | import json
from django.contrib.messages.storage.base import BaseStorage
from django.contrib.messages.storage.cookie import MessageDecoder, MessageEncoder
from django.core.exceptions import ImproperlyConfigured
class SessionStorage(BaseStorage):
"""
Store messages in the session (that is, django.contrib.sessions).
"""
session_key = "_messages"
def __init__(self, request, *args, **kwargs):
if not hasattr(request, "session"):
raise ImproperlyConfigured(
"The session-based temporary message storage requires session "
"middleware to be installed, and come before the message "
"middleware in the MIDDLEWARE list."
)
super().__init__(request, *args, **kwargs)
def _get(self, *args, **kwargs):
"""
Retrieve a list of messages from the request's session. This storage
always stores everything it is given, so return True for the
all_retrieved flag.
"""
return (
self.deserialize_messages(self.request.session.get(self.session_key)),
True,
)
def _store(self, messages, response, *args, **kwargs):
"""
Store a list of messages to the request's session.
"""
if messages:
self.request.session[self.session_key] = self.serialize_messages(messages)
else:
self.request.session.pop(self.session_key, None)
return []
def serialize_messages(self, messages):
encoder = MessageEncoder()
return encoder.encode(messages)
def deserialize_messages(self, data):
if data and isinstance(data, str):
return json.loads(data, cls=MessageDecoder)
return data
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/messages/storage/base.py | django/contrib/messages/storage/base.py | from django.conf import settings
from django.contrib.messages import constants, utils
from django.utils.functional import SimpleLazyObject
LEVEL_TAGS = SimpleLazyObject(utils.get_level_tags)
class Message:
"""
Represent an actual message that can be stored in any of the supported
storage classes (typically session- or cookie-based) and rendered in a view
or template.
"""
def __init__(self, level, message, extra_tags=None):
self.level = int(level)
self.message = message
self.extra_tags = extra_tags
def _prepare(self):
"""
Prepare the message for serialization by forcing the ``message``
and ``extra_tags`` to str in case they are lazy translations.
"""
self.message = str(self.message)
self.extra_tags = str(self.extra_tags) if self.extra_tags is not None else None
def __eq__(self, other):
if not isinstance(other, Message):
return NotImplemented
return self.level == other.level and self.message == other.message
def __str__(self):
return str(self.message)
def __repr__(self):
extra_tags = f", extra_tags={self.extra_tags!r}" if self.extra_tags else ""
return f"Message(level={self.level}, message={self.message!r}{extra_tags})"
@property
def tags(self):
return " ".join(tag for tag in [self.extra_tags, self.level_tag] if tag)
@property
def level_tag(self):
return LEVEL_TAGS.get(self.level, "")
class BaseStorage:
"""
This is the base backend for temporary message storage.
This is not a complete class; to be a usable storage backend, it must be
subclassed and the two methods ``_get`` and ``_store`` overridden.
"""
def __init__(self, request, *args, **kwargs):
self.request = request
self._queued_messages = []
self.used = False
self.added_new = False
super().__init__(*args, **kwargs)
def __len__(self):
return len(self._loaded_messages) + len(self._queued_messages)
def __iter__(self):
self.used = True
if self._queued_messages:
self._loaded_messages.extend(self._queued_messages)
self._queued_messages = []
return iter(self._loaded_messages)
def __contains__(self, item):
return item in self._loaded_messages or item in self._queued_messages
def __repr__(self):
return f"<{self.__class__.__qualname__}: request={self.request!r}>"
@property
def _loaded_messages(self):
"""
Return a list of loaded messages, retrieving them first if they have
not been loaded yet.
"""
if not hasattr(self, "_loaded_data"):
messages, all_retrieved = self._get()
self._loaded_data = messages or []
return self._loaded_data
def _get(self, *args, **kwargs):
"""
Retrieve a list of stored messages. Return a tuple of the messages
and a flag indicating whether or not all the messages originally
intended to be stored in this storage were, in fact, stored and
retrieved; e.g., ``(messages, all_retrieved)``.
**This method must be implemented by a subclass.**
If it is possible to tell if the backend was not used (as opposed to
just containing no messages) then ``None`` should be returned in
place of ``messages``.
"""
raise NotImplementedError(
"subclasses of BaseStorage must provide a _get() method"
)
def _store(self, messages, response, *args, **kwargs):
"""
Store a list of messages and return a list of any messages which could
not be stored.
One type of object must be able to be stored, ``Message``.
**This method must be implemented by a subclass.**
"""
raise NotImplementedError(
"subclasses of BaseStorage must provide a _store() method"
)
def _prepare_messages(self, messages):
"""
Prepare a list of messages for storage.
"""
for message in messages:
message._prepare()
def update(self, response):
"""
Store all unread messages.
If the backend has yet to be iterated, store previously stored messages
again. Otherwise, only store messages added after the last iteration.
"""
self._prepare_messages(self._queued_messages)
if self.used:
return self._store(self._queued_messages, response)
elif self.added_new:
messages = self._loaded_messages + self._queued_messages
return self._store(messages, response)
def add(self, level, message, extra_tags=""):
"""
Queue a message to be stored.
The message is only queued if it contained something and its level is
not less than the recording level (``self.level``).
"""
if not message:
return
# Check that the message level is not less than the recording level.
level = int(level)
if level < self.level:
return
# Add the message.
self.added_new = True
message = Message(level, message, extra_tags=extra_tags)
self._queued_messages.append(message)
def _get_level(self):
"""
Return the minimum recorded level.
The default level is the ``MESSAGE_LEVEL`` setting. If this is
not found, the ``INFO`` level is used.
"""
if not hasattr(self, "_level"):
self._level = getattr(settings, "MESSAGE_LEVEL", constants.INFO)
return self._level
def _set_level(self, value=None):
"""
Set a custom minimum recorded level.
If set to ``None``, the default level will be used (see the
``_get_level`` method).
"""
if value is None and hasattr(self, "_level"):
del self._level
else:
self._level = int(value)
level = property(_get_level, _set_level, _set_level)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admindocs/views.py | django/contrib/admindocs/views.py | import inspect
from importlib import import_module
from inspect import cleandoc
from pathlib import Path
from django.apps import apps
from django.contrib import admin
from django.contrib.admin.views.decorators import staff_member_required
from django.contrib.admindocs import utils
from django.contrib.admindocs.utils import (
remove_non_capturing_groups,
replace_metacharacters,
replace_named_groups,
replace_unnamed_groups,
)
from django.contrib.auth import get_permission_codename
from django.core.exceptions import (
ImproperlyConfigured,
PermissionDenied,
ViewDoesNotExist,
)
from django.db import models
from django.http import Http404
from django.template.engine import Engine
from django.urls import get_mod_func, get_resolver, get_urlconf
from django.utils._os import safe_join
from django.utils.decorators import method_decorator
from django.utils.functional import cached_property
from django.utils.inspect import (
func_accepts_kwargs,
func_accepts_var_args,
get_func_full_args,
method_has_no_args,
)
from django.utils.translation import gettext as _
from django.views.generic import TemplateView
from .utils import get_view_name, strip_p_tags
# Exclude methods starting with these strings from documentation
MODEL_METHODS_EXCLUDE = ("_", "add_", "delete", "save", "set_")
class BaseAdminDocsView(TemplateView):
"""
Base view for admindocs views.
"""
@method_decorator(staff_member_required)
def dispatch(self, request, *args, **kwargs):
if not utils.docutils_is_available:
# Display an error message for people without docutils
self.template_name = "admin_doc/missing_docutils.html"
return self.render_to_response(admin.site.each_context(request))
return super().dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
return super().get_context_data(
**{
**kwargs,
**admin.site.each_context(self.request),
}
)
class BookmarkletsView(BaseAdminDocsView):
template_name = "admin_doc/bookmarklets.html"
class TemplateTagIndexView(BaseAdminDocsView):
template_name = "admin_doc/template_tag_index.html"
def get_context_data(self, **kwargs):
tags = []
try:
engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
app_libs = sorted(engine.template_libraries.items())
builtin_libs = [("", lib) for lib in engine.template_builtins]
for module_name, library in builtin_libs + app_libs:
for tag_name, tag_func in library.tags.items():
title, body, metadata = utils.parse_docstring(tag_func.__doc__)
title = title and utils.parse_rst(
title, "tag", _("tag:") + tag_name
)
body = body and utils.parse_rst(body, "tag", _("tag:") + tag_name)
for key in metadata:
metadata[key] = utils.parse_rst(
metadata[key], "tag", _("tag:") + tag_name
)
tag_library = module_name.split(".")[-1]
tags.append(
{
"name": tag_name,
"title": title,
"body": body,
"meta": metadata,
"library": tag_library,
}
)
return super().get_context_data(**{**kwargs, "tags": tags})
class TemplateFilterIndexView(BaseAdminDocsView):
template_name = "admin_doc/template_filter_index.html"
def get_context_data(self, **kwargs):
filters = []
try:
engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
app_libs = sorted(engine.template_libraries.items())
builtin_libs = [("", lib) for lib in engine.template_builtins]
for module_name, library in builtin_libs + app_libs:
for filter_name, filter_func in library.filters.items():
title, body, metadata = utils.parse_docstring(filter_func.__doc__)
title = title and utils.parse_rst(
title, "filter", _("filter:") + filter_name
)
body = body and utils.parse_rst(
body, "filter", _("filter:") + filter_name
)
for key in metadata:
metadata[key] = utils.parse_rst(
metadata[key], "filter", _("filter:") + filter_name
)
tag_library = module_name.split(".")[-1]
filters.append(
{
"name": filter_name,
"title": title,
"body": body,
"meta": metadata,
"library": tag_library,
}
)
return super().get_context_data(**{**kwargs, "filters": filters})
class ViewIndexView(BaseAdminDocsView):
template_name = "admin_doc/view_index.html"
def get_context_data(self, **kwargs):
views = []
url_resolver = get_resolver(get_urlconf())
try:
view_functions = extract_views_from_urlpatterns(url_resolver.url_patterns)
except ImproperlyConfigured:
view_functions = []
for func, regex, namespace, name in view_functions:
views.append(
{
"full_name": get_view_name(func),
"url": simplify_regex(regex),
"url_name": ":".join((namespace or []) + (name and [name] or [])),
"namespace": ":".join(namespace or []),
"name": name,
}
)
return super().get_context_data(**{**kwargs, "views": views})
class ViewDetailView(BaseAdminDocsView):
template_name = "admin_doc/view_detail.html"
@staticmethod
def _get_view_func(view):
urlconf = get_urlconf()
if get_resolver(urlconf)._is_callback(view):
mod, func = get_mod_func(view)
try:
# Separate the module and function, e.g.
# 'mymodule.views.myview' -> 'mymodule.views', 'myview').
return getattr(import_module(mod), func)
except ImportError:
# Import may fail because view contains a class name, e.g.
# 'mymodule.views.ViewContainer.my_view', so mod takes the form
# 'mymodule.views.ViewContainer'. Parse it again to separate
# the module and class.
mod, klass = get_mod_func(mod)
return getattr(getattr(import_module(mod), klass), func)
def get_context_data(self, **kwargs):
view = self.kwargs["view"]
view_func = self._get_view_func(view)
if view_func is None:
raise Http404
title, body, metadata = utils.parse_docstring(view_func.__doc__)
title = title and utils.parse_rst(title, "view", _("view:") + view)
body = body and utils.parse_rst(body, "view", _("view:") + view)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], "model", _("view:") + view)
return super().get_context_data(
**{
**kwargs,
"name": view,
"summary": strip_p_tags(title),
"body": body,
"meta": metadata,
}
)
def user_has_model_view_permission(user, opts):
"""Based off ModelAdmin.has_view_permission."""
codename_view = get_permission_codename("view", opts)
codename_change = get_permission_codename("change", opts)
return user.has_perm("%s.%s" % (opts.app_label, codename_view)) or user.has_perm(
"%s.%s" % (opts.app_label, codename_change)
)
class ModelIndexView(BaseAdminDocsView):
template_name = "admin_doc/model_index.html"
def get_context_data(self, **kwargs):
m_list = [
m._meta
for m in apps.get_models()
if user_has_model_view_permission(self.request.user, m._meta)
]
return super().get_context_data(**{**kwargs, "models": m_list})
class ModelDetailView(BaseAdminDocsView):
template_name = "admin_doc/model_detail.html"
def get_context_data(self, **kwargs):
model_name = self.kwargs["model_name"]
# Get the model class.
try:
app_config = apps.get_app_config(self.kwargs["app_label"])
except LookupError:
raise Http404(_("App %(app_label)r not found") % self.kwargs)
try:
model = app_config.get_model(model_name)
except LookupError:
raise Http404(
_("Model %(model_name)r not found in app %(app_label)r") % self.kwargs
)
opts = model._meta
if not user_has_model_view_permission(self.request.user, opts):
raise PermissionDenied
title, body, metadata = utils.parse_docstring(model.__doc__)
title = title and utils.parse_rst(title, "model", _("model:") + model_name)
body = body and utils.parse_rst(body, "model", _("model:") + model_name)
# Gather fields/field descriptions.
fields = []
for field in opts.fields:
# ForeignKey is a special case since the field will actually be a
# descriptor that returns the other object
if isinstance(field, models.ForeignKey):
data_type = field.remote_field.model.__name__
app_label = field.remote_field.model._meta.app_label
verbose = utils.parse_rst(
(
_("the related `%(app_label)s.%(data_type)s` object")
% {
"app_label": app_label,
"data_type": data_type,
}
),
"model",
_("model:") + data_type,
)
else:
data_type = get_readable_field_data_type(field)
verbose = field.verbose_name
fields.append(
{
"name": field.name,
"data_type": data_type,
"verbose": verbose or "",
"help_text": field.help_text,
}
)
# Gather many-to-many fields.
for field in opts.many_to_many:
data_type = field.remote_field.model.__name__
app_label = field.remote_field.model._meta.app_label
verbose = _("related `%(app_label)s.%(object_name)s` objects") % {
"app_label": app_label,
"object_name": data_type,
}
fields.append(
{
"name": "%s.all" % field.name,
"data_type": "List",
"verbose": utils.parse_rst(
_("all %s") % verbose, "model", _("model:") + opts.model_name
),
}
)
fields.append(
{
"name": "%s.count" % field.name,
"data_type": "Integer",
"verbose": utils.parse_rst(
_("number of %s") % verbose,
"model",
_("model:") + opts.model_name,
),
}
)
methods = []
# Gather model methods.
for func_name, func in model.__dict__.items():
if inspect.isfunction(func) or isinstance(
func, (cached_property, property)
):
try:
for exclude in MODEL_METHODS_EXCLUDE:
if func_name.startswith(exclude):
raise StopIteration
except StopIteration:
continue
verbose = func.__doc__
verbose = verbose and (
utils.parse_rst(
cleandoc(verbose), "model", _("model:") + opts.model_name
)
)
# Show properties, cached_properties, and methods without
# arguments as fields. Otherwise, show as a 'method with
# arguments'.
if isinstance(func, (cached_property, property)):
fields.append(
{
"name": func_name,
"data_type": get_return_data_type(func_name),
"verbose": verbose or "",
}
)
elif (
method_has_no_args(func)
and not func_accepts_kwargs(func)
and not func_accepts_var_args(func)
):
fields.append(
{
"name": func_name,
"data_type": get_return_data_type(func_name),
"verbose": verbose or "",
}
)
else:
arguments = get_func_full_args(func)
# Join arguments with ', ' and in case of default value,
# join it with '='. Use repr() so that strings will be
# correctly displayed.
print_arguments = ", ".join(
[
"=".join([arg_el[0], *map(repr, arg_el[1:])])
for arg_el in arguments
]
)
methods.append(
{
"name": func_name,
"arguments": print_arguments,
"verbose": verbose or "",
}
)
# Gather related objects
for rel in opts.related_objects:
verbose = _("related `%(app_label)s.%(object_name)s` objects") % {
"app_label": rel.related_model._meta.app_label,
"object_name": rel.related_model._meta.object_name,
}
accessor = rel.accessor_name
fields.append(
{
"name": "%s.all" % accessor,
"data_type": "List",
"verbose": utils.parse_rst(
_("all %s") % verbose, "model", _("model:") + opts.model_name
),
}
)
fields.append(
{
"name": "%s.count" % accessor,
"data_type": "Integer",
"verbose": utils.parse_rst(
_("number of %s") % verbose,
"model",
_("model:") + opts.model_name,
),
}
)
return super().get_context_data(
**{
**kwargs,
"name": opts.label,
"summary": strip_p_tags(title),
"description": body,
"fields": fields,
"methods": methods,
}
)
class TemplateDetailView(BaseAdminDocsView):
template_name = "admin_doc/template_detail.html"
def get_context_data(self, **kwargs):
template = self.kwargs["template"]
templates = []
try:
default_engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
directories = list(default_engine.dirs)
for loader in default_engine.template_loaders:
if hasattr(loader, "get_dirs"):
for dir_ in loader.get_dirs():
if dir_ not in directories:
directories.append(dir_)
for index, directory in enumerate(directories):
template_file = Path(safe_join(directory, template))
if template_file.exists():
template_contents = template_file.read_text()
else:
template_contents = ""
templates.append(
{
"file": template_file,
"exists": template_file.exists(),
"contents": template_contents,
"order": index,
}
)
return super().get_context_data(
**{
**kwargs,
"name": template,
"templates": templates,
}
)
####################
# Helper functions #
####################
def get_return_data_type(func_name):
"""Return a somewhat-helpful data type given a function name"""
if func_name.startswith("get_"):
if func_name.endswith("_list"):
return "List"
elif func_name.endswith("_count"):
return "Integer"
return ""
def get_readable_field_data_type(field):
"""
Return the description for a given field type, if it exists. Fields'
descriptions can contain format strings, which will be interpolated with
the values of field.__dict__ before being output.
"""
return field.description % field.__dict__
def extract_views_from_urlpatterns(urlpatterns, base="", namespace=None):
"""
Return a list of views from a list of urlpatterns.
Each object in the returned list is a 4-tuple:
(view_func, regex, namespace, name)
"""
views = []
for p in urlpatterns:
if hasattr(p, "url_patterns"):
try:
patterns = p.url_patterns
except ImportError:
continue
views.extend(
extract_views_from_urlpatterns(
patterns,
base + str(p.pattern),
(namespace or []) + (p.namespace and [p.namespace] or []),
)
)
elif hasattr(p, "callback"):
try:
views.append((p.callback, base + str(p.pattern), namespace, p.name))
except ViewDoesNotExist:
continue
else:
raise TypeError(_("%s does not appear to be a urlpattern object") % p)
return views
def simplify_regex(pattern):
r"""
Clean up urlpattern regexes into something more readable by humans. For
example, turn "^(?P<sport_slug>\w+)/athletes/(?P<athlete_slug>\w+)/$"
into "/<sport_slug>/athletes/<athlete_slug>/".
"""
pattern = remove_non_capturing_groups(pattern)
pattern = replace_named_groups(pattern)
pattern = replace_unnamed_groups(pattern)
pattern = replace_metacharacters(pattern)
if not pattern.startswith("/"):
pattern = "/" + pattern
return pattern
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admindocs/middleware.py | django/contrib/admindocs/middleware.py | from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.http import HttpResponse
from django.utils.deprecation import MiddlewareMixin
from .utils import get_view_name
class XViewMiddleware(MiddlewareMixin):
"""
Add an X-View header to internal HEAD requests.
"""
def process_view(self, request, view_func, view_args, view_kwargs):
"""
If the request method is HEAD and either the IP is internal or the
user is a logged-in staff member, return a response with an x-view
header indicating the view function. This is used to lookup the view
function for an arbitrary page.
"""
if not hasattr(request, "user"):
raise ImproperlyConfigured(
"The XView middleware requires authentication middleware to "
"be installed. Edit your MIDDLEWARE setting to insert "
"'django.contrib.auth.middleware.AuthenticationMiddleware'."
)
if request.method == "HEAD" and (
request.META.get("REMOTE_ADDR") in settings.INTERNAL_IPS
or (request.user.is_active and request.user.is_staff)
):
response = HttpResponse()
response.headers["X-View"] = get_view_name(view_func)
return response
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admindocs/utils.py | django/contrib/admindocs/utils.py | "Misc. utility functions/classes for admin documentation generator."
import re
from email.errors import HeaderParseError
from email.parser import HeaderParser
from inspect import cleandoc
from django.urls import reverse
from django.utils.regex_helper import _lazy_re_compile
from django.utils.safestring import mark_safe
try:
import docutils.core
import docutils.nodes
import docutils.parsers.rst.roles
import docutils.writers
except ImportError:
docutils_is_available = False
else:
docutils_is_available = True
def get_view_name(view_func):
if hasattr(view_func, "view_class"):
klass = view_func.view_class
return f"{klass.__module__}.{klass.__qualname__}"
mod_name = view_func.__module__
view_name = getattr(view_func, "__qualname__", view_func.__class__.__name__)
return mod_name + "." + view_name
def parse_docstring(docstring):
"""
Parse out the parts of a docstring. Return (title, body, metadata).
"""
if not docstring:
return "", "", {}
docstring = cleandoc(docstring)
parts = re.split(r"\n{2,}", docstring)
title = parts[0]
if len(parts) == 1:
body = ""
metadata = {}
else:
parser = HeaderParser()
try:
metadata = parser.parsestr(parts[-1])
except HeaderParseError:
metadata = {}
body = "\n\n".join(parts[1:])
else:
metadata = dict(metadata.items())
if metadata:
body = "\n\n".join(parts[1:-1])
else:
body = "\n\n".join(parts[1:])
return title, body, metadata
def parse_rst(text, default_reference_context, thing_being_parsed=None):
"""
Convert the string from reST to an XHTML fragment.
"""
overrides = {
"doctitle_xform": True,
"initial_header_level": 3,
"default_reference_context": default_reference_context,
"link_base": reverse("django-admindocs-docroot").rstrip("/"),
"raw_enabled": False,
"file_insertion_enabled": False,
}
thing_being_parsed = thing_being_parsed and "<%s>" % thing_being_parsed
# Wrap ``text`` in some reST that sets the default role to
# ``cmsreference``, then restores it.
source = """
.. default-role:: cmsreference
%s
.. default-role::
"""
# In docutils < 0.22, the `writer` param must be an instance. Passing a
# string writer name like "html" is only supported in 0.22+.
writer_instance = docutils.writers.get_writer_class("html")()
parts = docutils.core.publish_parts(
source % text,
source_path=thing_being_parsed,
destination_path=None,
writer=writer_instance,
settings_overrides=overrides,
)
return mark_safe(parts["fragment"])
#
# reST roles
#
ROLES = {
"model": "%s/models/%s/",
"view": "%s/views/%s/",
"template": "%s/templates/%s/",
"filter": "%s/filters/#%s",
"tag": "%s/tags/#%s",
}
explicit_title_re = re.compile(r"^(.+?)\s*(?<!\x00)<([^<]*?)>$", re.DOTALL)
def split_explicit_title(text):
"""
Split role content into title and target, if given.
From sphinx.util.nodes.split_explicit_title. See:
https://github.com/sphinx-doc/sphinx/blob/230ccf2/sphinx/util/nodes.py#L389
"""
match = explicit_title_re.match(text)
if match:
return True, match.group(1), match.group(2)
return False, text, text
def create_reference_role(rolename, urlbase):
# Views and template names are case-sensitive.
is_case_sensitive = rolename in ["template", "view"]
def _role(name, rawtext, text, lineno, inliner, options=None, content=None):
if options is None:
options = {}
_, title, target = split_explicit_title(text)
node = docutils.nodes.reference(
rawtext,
title,
refuri=(
urlbase
% (
inliner.document.settings.link_base,
target if is_case_sensitive else target.lower(),
)
),
**options,
)
return [node], []
docutils.parsers.rst.roles.register_canonical_role(rolename, _role)
def default_reference_role(
name, rawtext, text, lineno, inliner, options=None, content=None
):
if options is None:
options = {}
context = inliner.document.settings.default_reference_context
node = docutils.nodes.reference(
rawtext,
text,
refuri=(
ROLES[context]
% (
inliner.document.settings.link_base,
text.lower(),
)
),
**options,
)
return [node], []
if docutils_is_available:
docutils.parsers.rst.roles.register_canonical_role(
"cmsreference", default_reference_role
)
for name, urlbase in ROLES.items():
create_reference_role(name, urlbase)
# Match the beginning of a named, unnamed, or non-capturing groups.
named_group_matcher = _lazy_re_compile(r"\(\?P(<\w+>)")
unnamed_group_matcher = _lazy_re_compile(r"\(")
non_capturing_group_matcher = _lazy_re_compile(r"\(\?\:")
def replace_metacharacters(pattern):
"""Remove unescaped metacharacters from the pattern."""
return re.sub(
r"((?:^|(?<!\\))(?:\\\\)*)(\\?)([?*+^$]|\\[bBAZ])",
lambda m: m[1] + m[3] if m[2] else m[1],
pattern,
)
def _get_group_start_end(start, end, pattern):
# Handle nested parentheses, e.g. '^(?P<a>(x|y))/b' or '^b/((x|y)\w+)$'.
unmatched_open_brackets, prev_char = 1, None
for idx, val in enumerate(pattern[end:]):
# Check for unescaped `(` and `)`. They mark the start and end of a
# nested group.
if val == "(" and prev_char != "\\":
unmatched_open_brackets += 1
elif val == ")" and prev_char != "\\":
unmatched_open_brackets -= 1
prev_char = val
# If brackets are balanced, the end of the string for the current named
# capture group pattern has been reached.
if unmatched_open_brackets == 0:
return start, end + idx + 1
def _find_groups(pattern, group_matcher):
prev_end = None
for match in group_matcher.finditer(pattern):
if indices := _get_group_start_end(match.start(0), match.end(0), pattern):
start, end = indices
if prev_end and start > prev_end or not prev_end:
yield start, end, match
prev_end = end
def replace_named_groups(pattern):
r"""
Find named groups in `pattern` and replace them with the group name. E.g.,
1. ^(?P<a>\w+)/b/(\w+)$ ==> ^<a>/b/(\w+)$
2. ^(?P<a>\w+)/b/(?P<c>\w+)/$ ==> ^<a>/b/<c>/$
3. ^(?P<a>\w+)/b/(\w+) ==> ^<a>/b/(\w+)
4. ^(?P<a>\w+)/b/(?P<c>\w+) ==> ^<a>/b/<c>
"""
group_pattern_and_name = [
(pattern[start:end], match[1])
for start, end, match in _find_groups(pattern, named_group_matcher)
]
for group_pattern, group_name in group_pattern_and_name:
pattern = pattern.replace(group_pattern, group_name)
return pattern
def replace_unnamed_groups(pattern):
r"""
Find unnamed groups in `pattern` and replace them with '<var>'. E.g.,
1. ^(?P<a>\w+)/b/(\w+)$ ==> ^(?P<a>\w+)/b/<var>$
2. ^(?P<a>\w+)/b/((x|y)\w+)$ ==> ^(?P<a>\w+)/b/<var>$
3. ^(?P<a>\w+)/b/(\w+) ==> ^(?P<a>\w+)/b/<var>
4. ^(?P<a>\w+)/b/((x|y)\w+) ==> ^(?P<a>\w+)/b/<var>
"""
final_pattern, prev_end = "", None
for start, end, _ in _find_groups(pattern, unnamed_group_matcher):
if prev_end:
final_pattern += pattern[prev_end:start]
final_pattern += pattern[:start] + "<var>"
prev_end = end
return final_pattern + pattern[prev_end:]
def remove_non_capturing_groups(pattern):
r"""
Find non-capturing groups in the given `pattern` and remove them, e.g.
1. (?P<a>\w+)/b/(?:\w+)c(?:\w+) => (?P<a>\\w+)/b/c
2. ^(?:\w+(?:\w+))a => ^a
3. ^a(?:\w+)/b(?:\w+) => ^a/b
"""
group_start_end_indices = _find_groups(pattern, non_capturing_group_matcher)
final_pattern, prev_end = "", None
for start, end, _ in group_start_end_indices:
final_pattern += pattern[prev_end:start]
prev_end = end
return final_pattern + pattern[prev_end:]
def strip_p_tags(value):
return mark_safe(value.replace("<p>", "").replace("</p>", ""))
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admindocs/__init__.py | django/contrib/admindocs/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admindocs/apps.py | django/contrib/admindocs/apps.py | from django.apps import AppConfig
from django.utils.translation import gettext_lazy as _
class AdminDocsConfig(AppConfig):
name = "django.contrib.admindocs"
verbose_name = _("Administrative Documentation")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/admindocs/urls.py | django/contrib/admindocs/urls.py | from django.contrib.admindocs import views
from django.urls import path, re_path
urlpatterns = [
path(
"",
views.BaseAdminDocsView.as_view(template_name="admin_doc/index.html"),
name="django-admindocs-docroot",
),
path(
"bookmarklets/",
views.BookmarkletsView.as_view(),
name="django-admindocs-bookmarklets",
),
path(
"tags/",
views.TemplateTagIndexView.as_view(),
name="django-admindocs-tags",
),
path(
"filters/",
views.TemplateFilterIndexView.as_view(),
name="django-admindocs-filters",
),
path(
"views/",
views.ViewIndexView.as_view(),
name="django-admindocs-views-index",
),
path(
"views/<view>/",
views.ViewDetailView.as_view(),
name="django-admindocs-views-detail",
),
path(
"models/",
views.ModelIndexView.as_view(),
name="django-admindocs-models-index",
),
re_path(
r"^models/(?P<app_label>[^.]+)\.(?P<model_name>[^/]+)/$",
views.ModelDetailView.as_view(),
name="django-admindocs-models-detail",
),
path(
"templates/<path:template>/",
views.TemplateDetailView.as_view(),
name="django-admindocs-templates",
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/base_session.py | django/contrib/sessions/base_session.py | """
This module allows importing AbstractBaseSession even
when django.contrib.sessions is not in INSTALLED_APPS.
"""
from django.db import models
from django.utils.translation import gettext_lazy as _
class BaseSessionManager(models.Manager):
def encode(self, session_dict):
"""
Return the given session dictionary serialized and encoded as a string.
"""
session_store_class = self.model.get_session_store_class()
return session_store_class().encode(session_dict)
def save(self, session_key, session_dict, expire_date):
s = self.model(session_key, self.encode(session_dict), expire_date)
if session_dict:
s.save()
else:
s.delete() # Clear sessions with no data.
return s
class AbstractBaseSession(models.Model):
session_key = models.CharField(_("session key"), max_length=40, primary_key=True)
session_data = models.TextField(_("session data"))
expire_date = models.DateTimeField(_("expire date"), db_index=True)
objects = BaseSessionManager()
class Meta:
abstract = True
verbose_name = _("session")
verbose_name_plural = _("sessions")
def __str__(self):
return self.session_key
@classmethod
def get_session_store_class(cls):
raise NotImplementedError
def get_decoded(self):
session_store_class = self.get_session_store_class()
return session_store_class().decode(self.session_data)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/middleware.py | django/contrib/sessions/middleware.py | import time
from importlib import import_module
from django.conf import settings
from django.contrib.sessions.backends.base import UpdateError
from django.contrib.sessions.exceptions import SessionInterrupted
from django.utils.cache import patch_vary_headers
from django.utils.deprecation import MiddlewareMixin
from django.utils.http import http_date
class SessionMiddleware(MiddlewareMixin):
def __init__(self, get_response):
super().__init__(get_response)
engine = import_module(settings.SESSION_ENGINE)
self.SessionStore = engine.SessionStore
def process_request(self, request):
session_key = request.COOKIES.get(settings.SESSION_COOKIE_NAME)
request.session = self.SessionStore(session_key)
def process_response(self, request, response):
"""
If request.session was modified, or if the configuration is to save the
session every time, save the changes and set a session cookie or delete
the session cookie if the session has been emptied.
"""
try:
accessed = request.session.accessed
modified = request.session.modified
empty = request.session.is_empty()
except AttributeError:
return response
# First check if we need to delete this cookie.
# The session should be deleted only if the session is entirely empty.
if settings.SESSION_COOKIE_NAME in request.COOKIES and empty:
response.delete_cookie(
settings.SESSION_COOKIE_NAME,
path=settings.SESSION_COOKIE_PATH,
domain=settings.SESSION_COOKIE_DOMAIN,
samesite=settings.SESSION_COOKIE_SAMESITE,
)
patch_vary_headers(response, ("Cookie",))
else:
if accessed:
patch_vary_headers(response, ("Cookie",))
if (modified or settings.SESSION_SAVE_EVERY_REQUEST) and not empty:
if request.session.get_expire_at_browser_close():
max_age = None
expires = None
else:
max_age = request.session.get_expiry_age()
expires_time = time.time() + max_age
expires = http_date(expires_time)
# Save the session data and refresh the client cookie.
# Skip session save for 5xx responses.
if response.status_code < 500:
try:
request.session.save()
except UpdateError:
raise SessionInterrupted(
"The request's session was deleted before the "
"request completed. The user may have logged "
"out in a concurrent request, for example."
)
response.set_cookie(
settings.SESSION_COOKIE_NAME,
request.session.session_key,
max_age=max_age,
expires=expires,
domain=settings.SESSION_COOKIE_DOMAIN,
path=settings.SESSION_COOKIE_PATH,
secure=settings.SESSION_COOKIE_SECURE or None,
httponly=settings.SESSION_COOKIE_HTTPONLY or None,
samesite=settings.SESSION_COOKIE_SAMESITE,
)
return response
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/models.py | django/contrib/sessions/models.py | from django.contrib.sessions.base_session import AbstractBaseSession, BaseSessionManager
class SessionManager(BaseSessionManager):
use_in_migrations = True
class Session(AbstractBaseSession):
"""
Django provides full support for anonymous sessions. The session
framework lets you store and retrieve arbitrary data on a
per-site-visitor basis. It stores data on the server side and
abstracts the sending and receiving of cookies. Cookies contain a
session ID -- not the data itself.
The Django sessions framework is entirely cookie-based. It does
not fall back to putting session IDs in URLs. This is an intentional
design decision. Not only does that behavior make URLs ugly, it makes
your site vulnerable to session-ID theft via the "Referer" header.
For complete documentation on using Sessions in your code, consult
the sessions documentation that is shipped with Django (also available
on the Django web site).
"""
objects = SessionManager()
@classmethod
def get_session_store_class(cls):
from django.contrib.sessions.backends.db import SessionStore
return SessionStore
class Meta(AbstractBaseSession.Meta):
db_table = "django_session"
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/serializers.py | django/contrib/sessions/serializers.py | from django.core.signing import JSONSerializer as BaseJSONSerializer
JSONSerializer = BaseJSONSerializer
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/exceptions.py | django/contrib/sessions/exceptions.py | from django.core.exceptions import BadRequest, SuspiciousOperation
class InvalidSessionKey(SuspiciousOperation):
"""Invalid characters in session key"""
pass
class SuspiciousSession(SuspiciousOperation):
"""The session may be tampered with"""
pass
class SessionInterrupted(BadRequest):
"""The session was interrupted."""
pass
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/__init__.py | django/contrib/sessions/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/apps.py | django/contrib/sessions/apps.py | from django.apps import AppConfig
from django.utils.translation import gettext_lazy as _
class SessionsConfig(AppConfig):
name = "django.contrib.sessions"
verbose_name = _("Sessions")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/management/__init__.py | django/contrib/sessions/management/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/management/commands/clearsessions.py | django/contrib/sessions/management/commands/clearsessions.py | from importlib import import_module
from django.conf import settings
from django.core.management.base import BaseCommand, CommandError
class Command(BaseCommand):
help = (
"Can be run as a cronjob or directly to clean out expired sessions "
"when the backend supports it."
)
def handle(self, **options):
engine = import_module(settings.SESSION_ENGINE)
try:
engine.SessionStore.clear_expired()
except NotImplementedError:
raise CommandError(
"Session engine '%s' doesn't support clearing expired "
"sessions." % settings.SESSION_ENGINE
)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/management/commands/__init__.py | django/contrib/sessions/management/commands/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/migrations/0001_initial.py | django/contrib/sessions/migrations/0001_initial.py | import django.contrib.sessions.models
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = []
operations = [
migrations.CreateModel(
name="Session",
fields=[
(
"session_key",
models.CharField(
max_length=40,
serialize=False,
verbose_name="session key",
primary_key=True,
),
),
("session_data", models.TextField(verbose_name="session data")),
(
"expire_date",
models.DateTimeField(verbose_name="expire date", db_index=True),
),
],
options={
"abstract": False,
"db_table": "django_session",
"verbose_name": "session",
"verbose_name_plural": "sessions",
},
managers=[
("objects", django.contrib.sessions.models.SessionManager()),
],
),
]
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/migrations/__init__.py | django/contrib/sessions/migrations/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/file.py | django/contrib/sessions/backends/file.py | import datetime
import logging
import os
import shutil
import tempfile
from django.conf import settings
from django.contrib.sessions.backends.base import (
VALID_KEY_CHARS,
CreateError,
SessionBase,
UpdateError,
)
from django.contrib.sessions.exceptions import InvalidSessionKey
from django.core.exceptions import ImproperlyConfigured, SuspiciousOperation
class SessionStore(SessionBase):
"""
Implement a file based session store.
"""
def __init__(self, session_key=None):
self.storage_path = self._get_storage_path()
self.file_prefix = settings.SESSION_COOKIE_NAME
super().__init__(session_key)
@classmethod
def _get_storage_path(cls):
try:
return cls._storage_path
except AttributeError:
storage_path = (
getattr(settings, "SESSION_FILE_PATH", None) or tempfile.gettempdir()
)
# Make sure the storage path is valid.
if not os.path.isdir(storage_path):
raise ImproperlyConfigured(
"The session storage path %r doesn't exist. Please set your"
" SESSION_FILE_PATH setting to an existing directory in which"
" Django can store session data." % storage_path
)
cls._storage_path = storage_path
return storage_path
def _key_to_file(self, session_key=None):
"""
Get the file associated with this session key.
"""
if session_key is None:
session_key = self._get_or_create_session_key()
# Make sure we're not vulnerable to directory traversal. Session keys
# should always be md5s, so they should never contain directory
# components.
if not set(session_key).issubset(VALID_KEY_CHARS):
raise InvalidSessionKey("Invalid characters in session key")
return os.path.join(self.storage_path, self.file_prefix + session_key)
def _last_modification(self):
"""
Return the modification time of the file storing the session's content.
"""
modification = os.stat(self._key_to_file()).st_mtime
tz = datetime.UTC if settings.USE_TZ else None
return datetime.datetime.fromtimestamp(modification, tz=tz)
def _expiry_date(self, session_data):
"""
Return the expiry time of the file storing the session's content.
"""
return session_data.get("_session_expiry") or (
self._last_modification()
+ datetime.timedelta(seconds=self.get_session_cookie_age())
)
def load(self):
session_data = {}
try:
with open(self._key_to_file(), encoding="ascii") as session_file:
file_data = session_file.read()
# Don't fail if there is no data in the session file.
# We may have opened the empty placeholder file.
if file_data:
try:
session_data = self.decode(file_data)
except (EOFError, SuspiciousOperation) as e:
if isinstance(e, SuspiciousOperation):
logger = logging.getLogger(
"django.security.%s" % e.__class__.__name__
)
logger.warning(str(e))
self.create()
# Remove expired sessions.
expiry_age = self.get_expiry_age(expiry=self._expiry_date(session_data))
if expiry_age <= 0:
session_data = {}
self.delete()
self.create()
except (OSError, SuspiciousOperation):
self._session_key = None
return session_data
async def aload(self):
return self.load()
def create(self):
while True:
self._session_key = self._get_new_session_key()
try:
self.save(must_create=True)
except CreateError:
continue
self.modified = True
return
async def acreate(self):
return self.create()
def save(self, must_create=False):
if self.session_key is None:
return self.create()
# Get the session data now, before we start messing
# with the file it is stored within.
session_data = self._get_session(no_load=must_create)
session_file_name = self._key_to_file()
try:
# Make sure the file exists. If it does not already exist, an
# empty placeholder file is created.
flags = os.O_WRONLY | getattr(os, "O_BINARY", 0)
if must_create:
flags |= os.O_EXCL | os.O_CREAT
fd = os.open(session_file_name, flags)
os.close(fd)
except FileNotFoundError:
if not must_create:
raise UpdateError
except FileExistsError:
if must_create:
raise CreateError
# Write the session file without interfering with other threads
# or processes. By writing to an atomically generated temporary
# file and then using the atomic os.rename() to make the complete
# file visible, we avoid having to lock the session file, while
# still maintaining its integrity.
#
# Note: Locking the session file was explored, but rejected in part
# because in order to be atomic and cross-platform, it required a
# long-lived lock file for each session, doubling the number of
# files in the session storage directory at any given time. This
# rename solution is cleaner and avoids any additional overhead
# when reading the session data, which is the more common case
# unless SESSION_SAVE_EVERY_REQUEST = True.
#
# See ticket #8616.
dir, prefix = os.path.split(session_file_name)
try:
output_file_fd, output_file_name = tempfile.mkstemp(
dir=dir, prefix=prefix + "_out_"
)
renamed = False
try:
try:
os.write(output_file_fd, self.encode(session_data).encode())
finally:
os.close(output_file_fd)
# This will atomically rename the file (os.rename) if the OS
# supports it. Otherwise this will result in a shutil.copy2
# and os.unlink (for example on Windows). See #9084.
shutil.move(output_file_name, session_file_name)
renamed = True
finally:
if not renamed:
os.unlink(output_file_name)
except (EOFError, OSError):
pass
async def asave(self, must_create=False):
return self.save(must_create=must_create)
def exists(self, session_key):
return os.path.exists(self._key_to_file(session_key))
async def aexists(self, session_key):
return self.exists(session_key)
def delete(self, session_key=None):
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
try:
os.unlink(self._key_to_file(session_key))
except OSError:
pass
async def adelete(self, session_key=None):
return self.delete(session_key=session_key)
@classmethod
def clear_expired(cls):
storage_path = cls._get_storage_path()
file_prefix = settings.SESSION_COOKIE_NAME
for session_file in os.listdir(storage_path):
if not session_file.startswith(file_prefix):
continue
session_key = session_file.removeprefix(file_prefix)
session = cls(session_key)
# When an expired session is loaded, its file is removed, and a
# new file is immediately created. Prevent this by disabling
# the create() method.
session.create = lambda: None
session.load()
@classmethod
async def aclear_expired(cls):
cls.clear_expired()
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/db.py | django/contrib/sessions/backends/db.py | import logging
from asgiref.sync import sync_to_async
from django.contrib.sessions.backends.base import CreateError, SessionBase, UpdateError
from django.core.exceptions import SuspiciousOperation
from django.db import DatabaseError, IntegrityError, router, transaction
from django.utils import timezone
from django.utils.functional import cached_property
class SessionStore(SessionBase):
"""
Implement database session store.
"""
def __init__(self, session_key=None):
super().__init__(session_key)
@classmethod
def get_model_class(cls):
# Avoids a circular import and allows importing SessionStore when
# django.contrib.sessions is not in INSTALLED_APPS.
from django.contrib.sessions.models import Session
return Session
@cached_property
def model(self):
return self.get_model_class()
def _get_session_from_db(self):
try:
return self.model.objects.get(
session_key=self.session_key, expire_date__gt=timezone.now()
)
except (self.model.DoesNotExist, SuspiciousOperation) as e:
if isinstance(e, SuspiciousOperation):
logger = logging.getLogger("django.security.%s" % e.__class__.__name__)
logger.warning(str(e))
self._session_key = None
async def _aget_session_from_db(self):
try:
return await self.model.objects.aget(
session_key=self.session_key, expire_date__gt=timezone.now()
)
except (self.model.DoesNotExist, SuspiciousOperation) as e:
if isinstance(e, SuspiciousOperation):
logger = logging.getLogger("django.security.%s" % e.__class__.__name__)
logger.warning(str(e))
self._session_key = None
def load(self):
s = self._get_session_from_db()
return self.decode(s.session_data) if s else {}
async def aload(self):
s = await self._aget_session_from_db()
return self.decode(s.session_data) if s else {}
def exists(self, session_key):
return self.model.objects.filter(session_key=session_key).exists()
async def aexists(self, session_key):
return await self.model.objects.filter(session_key=session_key).aexists()
def create(self):
while True:
self._session_key = self._get_new_session_key()
try:
# Save immediately to ensure we have a unique entry in the
# database.
self.save(must_create=True)
except CreateError:
# Key wasn't unique. Try again.
continue
self.modified = True
return
async def acreate(self):
while True:
self._session_key = await self._aget_new_session_key()
try:
# Save immediately to ensure we have a unique entry in the
# database.
await self.asave(must_create=True)
except CreateError:
# Key wasn't unique. Try again.
continue
self.modified = True
return
def create_model_instance(self, data):
"""
Return a new instance of the session model object, which represents the
current session state. Intended to be used for saving the session data
to the database.
"""
return self.model(
session_key=self._get_or_create_session_key(),
session_data=self.encode(data),
expire_date=self.get_expiry_date(),
)
async def acreate_model_instance(self, data):
"""See create_model_instance()."""
return self.model(
session_key=await self._aget_or_create_session_key(),
session_data=self.encode(data),
expire_date=await self.aget_expiry_date(),
)
def save(self, must_create=False):
"""
Save the current session data to the database. If 'must_create' is
True, raise a database error if the saving operation doesn't create a
new entry (as opposed to possibly updating an existing entry).
"""
if self.session_key is None:
return self.create()
data = self._get_session(no_load=must_create)
obj = self.create_model_instance(data)
using = router.db_for_write(self.model, instance=obj)
try:
with transaction.atomic(using=using):
obj.save(
force_insert=must_create, force_update=not must_create, using=using
)
except IntegrityError:
if must_create:
raise CreateError
raise
except DatabaseError:
if not must_create:
raise UpdateError
raise
async def asave(self, must_create=False):
"""See save()."""
if self.session_key is None:
return await self.acreate()
data = await self._aget_session(no_load=must_create)
obj = await self.acreate_model_instance(data)
using = router.db_for_write(self.model, instance=obj)
try:
# This code MOST run in a transaction, so it requires
# @sync_to_async wrapping until transaction.atomic() supports
# async.
@sync_to_async
def sync_transaction():
with transaction.atomic(using=using):
obj.save(
force_insert=must_create,
force_update=not must_create,
using=using,
)
await sync_transaction()
except IntegrityError:
if must_create:
raise CreateError
raise
except DatabaseError:
if not must_create:
raise UpdateError
raise
def delete(self, session_key=None):
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
try:
self.model.objects.get(session_key=session_key).delete()
except self.model.DoesNotExist:
pass
async def adelete(self, session_key=None):
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
try:
obj = await self.model.objects.aget(session_key=session_key)
await obj.adelete()
except self.model.DoesNotExist:
pass
@classmethod
def clear_expired(cls):
cls.get_model_class().objects.filter(expire_date__lt=timezone.now()).delete()
@classmethod
async def aclear_expired(cls):
await cls.get_model_class().objects.filter(
expire_date__lt=timezone.now()
).adelete()
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/__init__.py | django/contrib/sessions/backends/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/signed_cookies.py | django/contrib/sessions/backends/signed_cookies.py | from django.contrib.sessions.backends.base import SessionBase
from django.core import signing
class SessionStore(SessionBase):
def load(self):
"""
Load the data from the key itself instead of fetching from some
external data store. Opposite of _get_session_key(), raise BadSignature
if signature fails.
"""
try:
return signing.loads(
self.session_key,
serializer=self.serializer,
# This doesn't handle non-default expiry dates, see #19201
max_age=self.get_session_cookie_age(),
salt="django.contrib.sessions.backends.signed_cookies",
)
except Exception:
# BadSignature, ValueError, or unpickling exceptions. If any of
# these happen, reset the session.
self.create()
return {}
async def aload(self):
return self.load()
def create(self):
"""
To create a new key, set the modified flag so that the cookie is set
on the client for the current request.
"""
self.modified = True
async def acreate(self):
return self.create()
def save(self, must_create=False):
"""
To save, get the session key as a securely signed string and then set
the modified flag so that the cookie is set on the client for the
current request.
"""
self._session_key = self._get_session_key()
self.modified = True
async def asave(self, must_create=False):
return self.save(must_create=must_create)
def exists(self, session_key=None):
"""
This method makes sense when you're talking to a shared resource, but
it doesn't matter when you're storing the information in the client's
cookie.
"""
return False
async def aexists(self, session_key=None):
return self.exists(session_key=session_key)
def delete(self, session_key=None):
"""
To delete, clear the session key and the underlying data structure
and set the modified flag so that the cookie is set on the client for
the current request.
"""
self._session_key = ""
self._session_cache = {}
self.modified = True
async def adelete(self, session_key=None):
return self.delete(session_key=session_key)
def cycle_key(self):
"""
Keep the same data but with a new key. Call save() and it will
automatically save a cookie with a new key at the end of the request.
"""
self.save()
async def acycle_key(self):
return self.cycle_key()
def _get_session_key(self):
"""
Instead of generating a random string, generate a secure url-safe
base64-encoded string of data as our session key.
"""
return signing.dumps(
self._session,
compress=True,
salt="django.contrib.sessions.backends.signed_cookies",
serializer=self.serializer,
)
@classmethod
def clear_expired(cls):
pass
@classmethod
async def aclear_expired(cls):
pass
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/cached_db.py | django/contrib/sessions/backends/cached_db.py | """
Cached, database-backed sessions.
"""
import logging
from django.conf import settings
from django.contrib.sessions.backends.db import SessionStore as DBStore
from django.core.cache import caches
KEY_PREFIX = "django.contrib.sessions.cached_db"
logger = logging.getLogger("django.contrib.sessions")
class SessionStore(DBStore):
"""
Implement cached, database backed sessions.
"""
cache_key_prefix = KEY_PREFIX
def __init__(self, session_key=None):
self._cache = caches[settings.SESSION_CACHE_ALIAS]
super().__init__(session_key)
@property
def cache_key(self):
return self.cache_key_prefix + self._get_or_create_session_key()
async def acache_key(self):
return self.cache_key_prefix + await self._aget_or_create_session_key()
def load(self):
try:
data = self._cache.get(self.cache_key)
except Exception:
# Some backends (e.g. memcache) raise an exception on invalid
# cache keys. If this happens, reset the session. See #17810.
data = None
if data is None:
s = self._get_session_from_db()
if s:
data = self.decode(s.session_data)
self._cache.set(
self.cache_key, data, self.get_expiry_age(expiry=s.expire_date)
)
else:
data = {}
return data
async def aload(self):
try:
data = await self._cache.aget(await self.acache_key())
except Exception:
# Some backends (e.g. memcache) raise an exception on invalid
# cache keys. If this happens, reset the session. See #17810.
data = None
if data is None:
s = await self._aget_session_from_db()
if s:
data = self.decode(s.session_data)
await self._cache.aset(
await self.acache_key(),
data,
await self.aget_expiry_age(expiry=s.expire_date),
)
else:
data = {}
return data
def exists(self, session_key):
return (
session_key
and (self.cache_key_prefix + session_key) in self._cache
or super().exists(session_key)
)
async def aexists(self, session_key):
return (
session_key
and (self.cache_key_prefix + session_key) in self._cache
or await super().aexists(session_key)
)
def save(self, must_create=False):
super().save(must_create)
try:
self._cache.set(self.cache_key, self._session, self.get_expiry_age())
except Exception:
logger.exception("Error saving to cache (%s)", self._cache)
async def asave(self, must_create=False):
await super().asave(must_create)
try:
await self._cache.aset(
await self.acache_key(),
self._session,
await self.aget_expiry_age(),
)
except Exception:
logger.exception("Error saving to cache (%s)", self._cache)
def delete(self, session_key=None):
super().delete(session_key)
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
self._cache.delete(self.cache_key_prefix + session_key)
async def adelete(self, session_key=None):
await super().adelete(session_key)
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
await self._cache.adelete(self.cache_key_prefix + session_key)
def flush(self):
"""
Remove the current session data from the database and regenerate the
key.
"""
self.clear()
self.delete(self.session_key)
self._session_key = None
async def aflush(self):
"""See flush()."""
self.clear()
await self.adelete(self.session_key)
self._session_key = None
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/base.py | django/contrib/sessions/backends/base.py | import logging
import string
from datetime import datetime, timedelta
from asgiref.sync import sync_to_async
from django.conf import settings
from django.core import signing
from django.utils import timezone
from django.utils.crypto import get_random_string
from django.utils.module_loading import import_string
# session_key should not be case sensitive because some backends can store it
# on case insensitive file systems.
VALID_KEY_CHARS = string.ascii_lowercase + string.digits
class CreateError(Exception):
"""
Used internally as a consistent exception type to catch from save (see the
docstring for SessionBase.save() for details).
"""
pass
class UpdateError(Exception):
"""
Occurs if Django tries to update a session that was deleted.
"""
pass
class SessionBase:
"""
Base class for all Session classes.
"""
TEST_COOKIE_NAME = "testcookie"
TEST_COOKIE_VALUE = "worked"
__not_given = object()
def __init__(self, session_key=None):
self._session_key = session_key
self.accessed = False
self.modified = False
self.serializer = import_string(settings.SESSION_SERIALIZER)
def __contains__(self, key):
return key in self._session
def __getitem__(self, key):
return self._session[key]
def __setitem__(self, key, value):
self._session[key] = value
self.modified = True
async def aset(self, key, value):
(await self._aget_session())[key] = value
self.modified = True
def __delitem__(self, key):
del self._session[key]
self.modified = True
@property
def key_salt(self):
return "django.contrib.sessions." + self.__class__.__qualname__
def get(self, key, default=None):
return self._session.get(key, default)
async def aget(self, key, default=None):
return (await self._aget_session()).get(key, default)
def pop(self, key, default=__not_given):
self.modified = self.modified or key in self._session
args = () if default is self.__not_given else (default,)
return self._session.pop(key, *args)
async def apop(self, key, default=__not_given):
self.modified = self.modified or key in (await self._aget_session())
args = () if default is self.__not_given else (default,)
return (await self._aget_session()).pop(key, *args)
def setdefault(self, key, value):
if key in self._session:
return self._session[key]
else:
self[key] = value
return value
async def asetdefault(self, key, value):
session = await self._aget_session()
if key in session:
return session[key]
else:
await self.aset(key, value)
return value
def set_test_cookie(self):
self[self.TEST_COOKIE_NAME] = self.TEST_COOKIE_VALUE
async def aset_test_cookie(self):
await self.aset(self.TEST_COOKIE_NAME, self.TEST_COOKIE_VALUE)
def test_cookie_worked(self):
return self.get(self.TEST_COOKIE_NAME) == self.TEST_COOKIE_VALUE
async def atest_cookie_worked(self):
return (await self.aget(self.TEST_COOKIE_NAME)) == self.TEST_COOKIE_VALUE
def delete_test_cookie(self):
del self[self.TEST_COOKIE_NAME]
async def adelete_test_cookie(self):
del (await self._aget_session())[self.TEST_COOKIE_NAME]
def encode(self, session_dict):
"""
Return the given session dictionary serialized and encoded as a string.
"""
return signing.dumps(
session_dict,
salt=self.key_salt,
serializer=self.serializer,
compress=True,
)
def decode(self, session_data):
try:
return signing.loads(
session_data, salt=self.key_salt, serializer=self.serializer
)
except signing.BadSignature:
logger = logging.getLogger("django.security.SuspiciousSession")
logger.warning("Session data corrupted")
except Exception:
# ValueError, unpickling exceptions. If any of these happen, just
# return an empty dictionary (an empty session).
pass
return {}
def update(self, dict_):
self._session.update(dict_)
self.modified = True
async def aupdate(self, dict_):
(await self._aget_session()).update(dict_)
self.modified = True
def has_key(self, key):
return key in self._session
async def ahas_key(self, key):
return key in (await self._aget_session())
def keys(self):
return self._session.keys()
async def akeys(self):
return (await self._aget_session()).keys()
def values(self):
return self._session.values()
async def avalues(self):
return (await self._aget_session()).values()
def items(self):
return self._session.items()
async def aitems(self):
return (await self._aget_session()).items()
def clear(self):
# To avoid unnecessary persistent storage accesses, we set up the
# internals directly (loading data wastes time, since we are going to
# set it to an empty dict anyway).
self._session_cache = {}
self.accessed = True
self.modified = True
def is_empty(self):
"Return True when there is no session_key and the session is empty."
try:
return not self._session_key and not self._session_cache
except AttributeError:
return True
def _get_new_session_key(self):
"Return session key that isn't being used."
while True:
session_key = get_random_string(32, VALID_KEY_CHARS)
if not self.exists(session_key):
return session_key
async def _aget_new_session_key(self):
while True:
session_key = get_random_string(32, VALID_KEY_CHARS)
if not await self.aexists(session_key):
return session_key
def _get_or_create_session_key(self):
if self._session_key is None:
self._session_key = self._get_new_session_key()
return self._session_key
async def _aget_or_create_session_key(self):
if self._session_key is None:
self._session_key = await self._aget_new_session_key()
return self._session_key
def _validate_session_key(self, key):
"""
Key must be truthy and at least 8 characters long. 8 characters is an
arbitrary lower bound for some minimal key security.
"""
return key and len(key) >= 8
def _get_session_key(self):
return self.__session_key
def _set_session_key(self, value):
"""
Validate session key on assignment. Invalid values will set to None.
"""
if self._validate_session_key(value):
self.__session_key = value
else:
self.__session_key = None
session_key = property(_get_session_key)
_session_key = property(_get_session_key, _set_session_key)
def _get_session(self, no_load=False):
"""
Lazily load session from storage (unless "no_load" is True, when only
an empty dict is stored) and store it in the current instance.
"""
self.accessed = True
try:
return self._session_cache
except AttributeError:
if self.session_key is None or no_load:
self._session_cache = {}
else:
self._session_cache = self.load()
return self._session_cache
async def _aget_session(self, no_load=False):
self.accessed = True
try:
return self._session_cache
except AttributeError:
if self.session_key is None or no_load:
self._session_cache = {}
else:
self._session_cache = await self.aload()
return self._session_cache
_session = property(_get_session)
def get_session_cookie_age(self):
return settings.SESSION_COOKIE_AGE
def get_expiry_age(self, **kwargs):
"""Get the number of seconds until the session expires.
Optionally, this function accepts `modification` and `expiry` keyword
arguments specifying the modification and expiry of the session.
"""
try:
modification = kwargs["modification"]
except KeyError:
modification = timezone.now()
# Make the difference between "expiry=None passed in kwargs" and
# "expiry not passed in kwargs", in order to guarantee not to trigger
# self.load() when expiry is provided.
try:
expiry = kwargs["expiry"]
except KeyError:
expiry = self.get("_session_expiry")
if not expiry: # Checks both None and 0 cases
return self.get_session_cookie_age()
if not isinstance(expiry, (datetime, str)):
return expiry
if isinstance(expiry, str):
expiry = datetime.fromisoformat(expiry)
delta = expiry - modification
return delta.days * 86400 + delta.seconds
async def aget_expiry_age(self, **kwargs):
try:
modification = kwargs["modification"]
except KeyError:
modification = timezone.now()
try:
expiry = kwargs["expiry"]
except KeyError:
expiry = await self.aget("_session_expiry")
if not expiry: # Checks both None and 0 cases
return self.get_session_cookie_age()
if not isinstance(expiry, (datetime, str)):
return expiry
if isinstance(expiry, str):
expiry = datetime.fromisoformat(expiry)
delta = expiry - modification
return delta.days * 86400 + delta.seconds
def get_expiry_date(self, **kwargs):
"""Get session the expiry date (as a datetime object).
Optionally, this function accepts `modification` and `expiry` keyword
arguments specifying the modification and expiry of the session.
"""
try:
modification = kwargs["modification"]
except KeyError:
modification = timezone.now()
# Same comment as in get_expiry_age
try:
expiry = kwargs["expiry"]
except KeyError:
expiry = self.get("_session_expiry")
if isinstance(expiry, datetime):
return expiry
elif isinstance(expiry, str):
return datetime.fromisoformat(expiry)
expiry = expiry or self.get_session_cookie_age()
return modification + timedelta(seconds=expiry)
async def aget_expiry_date(self, **kwargs):
try:
modification = kwargs["modification"]
except KeyError:
modification = timezone.now()
try:
expiry = kwargs["expiry"]
except KeyError:
expiry = await self.aget("_session_expiry")
if isinstance(expiry, datetime):
return expiry
elif isinstance(expiry, str):
return datetime.fromisoformat(expiry)
expiry = expiry or self.get_session_cookie_age()
return modification + timedelta(seconds=expiry)
def set_expiry(self, value):
"""
Set a custom expiration for the session. ``value`` can be an integer,
a Python ``datetime`` or ``timedelta`` object or ``None``.
If ``value`` is an integer, the session will expire after that many
seconds of inactivity. If set to ``0`` then the session will expire on
browser close.
If ``value`` is a ``datetime`` or ``timedelta`` object, the session
will expire at that specific future time.
If ``value`` is ``None``, the session uses the global session expiry
policy.
"""
if value is None:
# Remove any custom expiration for this session.
try:
del self["_session_expiry"]
except KeyError:
pass
return
if isinstance(value, timedelta):
value = timezone.now() + value
if isinstance(value, datetime):
value = value.isoformat()
self["_session_expiry"] = value
async def aset_expiry(self, value):
if value is None:
# Remove any custom expiration for this session.
try:
await self.apop("_session_expiry")
except KeyError:
pass
return
if isinstance(value, timedelta):
value = timezone.now() + value
if isinstance(value, datetime):
value = value.isoformat()
await self.aset("_session_expiry", value)
def get_expire_at_browser_close(self):
"""
Return ``True`` if the session is set to expire when the browser
closes, and ``False`` if there's an expiry date. Use
``get_expiry_date()`` or ``get_expiry_age()`` to find the actual expiry
date/age, if there is one.
"""
if (expiry := self.get("_session_expiry")) is None:
return settings.SESSION_EXPIRE_AT_BROWSER_CLOSE
return expiry == 0
async def aget_expire_at_browser_close(self):
if (expiry := await self.aget("_session_expiry")) is None:
return settings.SESSION_EXPIRE_AT_BROWSER_CLOSE
return expiry == 0
def flush(self):
"""
Remove the current session data from the database and regenerate the
key.
"""
self.clear()
self.delete()
self._session_key = None
async def aflush(self):
self.clear()
await self.adelete()
self._session_key = None
def cycle_key(self):
"""
Create a new session key, while retaining the current session data.
"""
data = self._session
key = self.session_key
self.create()
self._session_cache = data
if key:
self.delete(key)
async def acycle_key(self):
"""
Create a new session key, while retaining the current session data.
"""
data = await self._aget_session()
key = self.session_key
await self.acreate()
self._session_cache = data
if key:
await self.adelete(key)
# Methods that child classes must implement.
def exists(self, session_key):
"""
Return True if the given session_key already exists.
"""
raise NotImplementedError(
"subclasses of SessionBase must provide an exists() method"
)
async def aexists(self, session_key):
return await sync_to_async(self.exists)(session_key)
def create(self):
"""
Create a new session instance. Guaranteed to create a new object with
a unique key and will have saved the result once (with empty data)
before the method returns.
"""
raise NotImplementedError(
"subclasses of SessionBase must provide a create() method"
)
async def acreate(self):
return await sync_to_async(self.create)()
def save(self, must_create=False):
"""
Save the session data. If 'must_create' is True, create a new session
object (or raise CreateError). Otherwise, only update an existing
object and don't create one (raise UpdateError if needed).
"""
raise NotImplementedError(
"subclasses of SessionBase must provide a save() method"
)
async def asave(self, must_create=False):
return await sync_to_async(self.save)(must_create)
def delete(self, session_key=None):
"""
Delete the session data under this key. If the key is None, use the
current session key value.
"""
raise NotImplementedError(
"subclasses of SessionBase must provide a delete() method"
)
async def adelete(self, session_key=None):
return await sync_to_async(self.delete)(session_key)
def load(self):
"""
Load the session data and return a dictionary.
"""
raise NotImplementedError(
"subclasses of SessionBase must provide a load() method"
)
async def aload(self):
return await sync_to_async(self.load)()
@classmethod
def clear_expired(cls):
"""
Remove expired sessions from the session store.
If this operation isn't possible on a given backend, it should raise
NotImplementedError. If it isn't necessary, because the backend has
a built-in expiration mechanism, it should be a no-op.
"""
raise NotImplementedError("This backend does not support clear_expired().")
@classmethod
async def aclear_expired(cls):
return await sync_to_async(cls.clear_expired)()
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/sessions/backends/cache.py | django/contrib/sessions/backends/cache.py | from django.conf import settings
from django.contrib.sessions.backends.base import CreateError, SessionBase, UpdateError
from django.core.cache import caches
KEY_PREFIX = "django.contrib.sessions.cache"
class SessionStore(SessionBase):
"""
A cache-based session store.
"""
cache_key_prefix = KEY_PREFIX
def __init__(self, session_key=None):
self._cache = caches[settings.SESSION_CACHE_ALIAS]
super().__init__(session_key)
@property
def cache_key(self):
return self.cache_key_prefix + self._get_or_create_session_key()
async def acache_key(self):
return self.cache_key_prefix + await self._aget_or_create_session_key()
def load(self):
try:
session_data = self._cache.get(self.cache_key)
except Exception:
# Some backends (e.g. memcache) raise an exception on invalid
# cache keys. If this happens, reset the session. See #17810.
session_data = None
if session_data is not None:
return session_data
self._session_key = None
return {}
async def aload(self):
try:
session_data = await self._cache.aget(await self.acache_key())
except Exception:
session_data = None
if session_data is not None:
return session_data
self._session_key = None
return {}
def create(self):
# Because a cache can fail silently (e.g. memcache), we don't know if
# we are failing to create a new session because of a key collision or
# because the cache is missing. So we try for a (large) number of times
# and then raise an exception. That's the risk you shoulder if using
# cache backing.
for i in range(10000):
self._session_key = self._get_new_session_key()
try:
self.save(must_create=True)
except CreateError:
continue
self.modified = True
return
raise RuntimeError(
"Unable to create a new session key. "
"It is likely that the cache is unavailable."
)
async def acreate(self):
for i in range(10000):
self._session_key = await self._aget_new_session_key()
try:
await self.asave(must_create=True)
except CreateError:
continue
self.modified = True
return
raise RuntimeError(
"Unable to create a new session key. "
"It is likely that the cache is unavailable."
)
def save(self, must_create=False):
if self.session_key is None:
return self.create()
if must_create:
func = self._cache.add
elif self._cache.get(self.cache_key) is not None:
func = self._cache.set
else:
raise UpdateError
result = func(
self.cache_key,
self._get_session(no_load=must_create),
self.get_expiry_age(),
)
if must_create and not result:
raise CreateError
async def asave(self, must_create=False):
if self.session_key is None:
return await self.acreate()
if must_create:
func = self._cache.aadd
elif await self._cache.aget(await self.acache_key()) is not None:
func = self._cache.aset
else:
raise UpdateError
result = await func(
await self.acache_key(),
await self._aget_session(no_load=must_create),
await self.aget_expiry_age(),
)
if must_create and not result:
raise CreateError
def exists(self, session_key):
return (
bool(session_key) and (self.cache_key_prefix + session_key) in self._cache
)
async def aexists(self, session_key):
return bool(session_key) and await self._cache.ahas_key(
self.cache_key_prefix + session_key
)
def delete(self, session_key=None):
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
self._cache.delete(self.cache_key_prefix + session_key)
async def adelete(self, session_key=None):
if session_key is None:
if self.session_key is None:
return
session_key = self.session_key
await self._cache.adelete(self.cache_key_prefix + session_key)
@classmethod
def clear_expired(cls):
pass
@classmethod
async def aclear_expired(cls):
pass
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/views.py | django/contrib/contenttypes/views.py | from django.apps import apps
from django.contrib.contenttypes.models import ContentType
from django.contrib.sites.shortcuts import get_current_site
from django.core.exceptions import ObjectDoesNotExist, ValidationError
from django.http import Http404, HttpResponseRedirect
from django.utils.translation import gettext as _
def shortcut(request, content_type_id, object_id):
"""
Redirect to an object's page based on a content-type ID and an object ID.
"""
# Look up the object, making sure it's got a get_absolute_url() function.
try:
content_type = ContentType.objects.get(pk=content_type_id)
if not content_type.model_class():
raise Http404(
_("Content type %(ct_id)s object has no associated model")
% {"ct_id": content_type_id}
)
obj = content_type.get_object_for_this_type(pk=object_id)
except (ObjectDoesNotExist, ValueError, ValidationError):
raise Http404(
_("Content type %(ct_id)s object %(obj_id)s doesn’t exist")
% {"ct_id": content_type_id, "obj_id": object_id}
)
try:
get_absolute_url = obj.get_absolute_url
except AttributeError:
raise Http404(
_("%(ct_name)s objects don’t have a get_absolute_url() method")
% {"ct_name": content_type.name}
)
absurl = get_absolute_url()
# Try to figure out the object's domain, so we can do a cross-site redirect
# if necessary.
# If the object actually defines a domain, we're done.
if absurl.startswith(("http://", "https://", "//")):
return HttpResponseRedirect(absurl)
# Otherwise, we need to introspect the object's relationships for a
# relation to the Site object
try:
object_domain = get_current_site(request).domain
except ObjectDoesNotExist:
object_domain = None
if apps.is_installed("django.contrib.sites"):
Site = apps.get_model("sites.Site")
opts = obj._meta
for field in opts.many_to_many:
# Look for a many-to-many relationship to Site.
if field.remote_field.model is Site:
site_qs = getattr(obj, field.name).all()
if object_domain and site_qs.filter(domain=object_domain).exists():
# The current site's domain matches a site attached to the
# object.
break
# Caveat: In the case of multiple related Sites, this just
# selects the *first* one, which is arbitrary.
site = site_qs.first()
if site:
object_domain = site.domain
break
else:
# No many-to-many relationship to Site found. Look for a
# many-to-one relationship to Site.
for field in obj._meta.fields:
if field.remote_field and field.remote_field.model is Site:
try:
site = getattr(obj, field.name)
except Site.DoesNotExist:
continue
if site is not None:
object_domain = site.domain
break
# If all that malarkey found an object domain, use it. Otherwise, fall back
# to whatever get_absolute_url() returned.
if object_domain is not None:
protocol = request.scheme
return HttpResponseRedirect("%s://%s%s" % (protocol, object_domain, absurl))
else:
return HttpResponseRedirect(absurl)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/admin.py | django/contrib/contenttypes/admin.py | from functools import partial
from django.contrib.admin.checks import InlineModelAdminChecks
from django.contrib.admin.options import InlineModelAdmin, flatten_fieldsets
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.forms import (
BaseGenericInlineFormSet,
generic_inlineformset_factory,
)
from django.core import checks
from django.core.exceptions import FieldDoesNotExist
from django.forms import ALL_FIELDS
from django.forms.models import modelform_defines_fields
class GenericInlineModelAdminChecks(InlineModelAdminChecks):
def _check_exclude_of_parent_model(self, obj, parent_model):
# There's no FK to exclude, so no exclusion checks are required.
return []
def _check_relation(self, obj, parent_model):
# There's no FK, but we do need to confirm that the ct_field and
# ct_fk_field are valid, and that they are part of a GenericForeignKey.
gfks = [
f
for f in obj.model._meta.private_fields
if isinstance(f, GenericForeignKey)
]
if not gfks:
return [
checks.Error(
"'%s' has no GenericForeignKey." % obj.model._meta.label,
obj=obj.__class__,
id="admin.E301",
)
]
else:
# Check that the ct_field and ct_fk_fields exist
try:
obj.model._meta.get_field(obj.ct_field)
except FieldDoesNotExist:
return [
checks.Error(
"'ct_field' references '%s', which is not a field on '%s'."
% (
obj.ct_field,
obj.model._meta.label,
),
obj=obj.__class__,
id="admin.E302",
)
]
try:
obj.model._meta.get_field(obj.ct_fk_field)
except FieldDoesNotExist:
return [
checks.Error(
"'ct_fk_field' references '%s', which is not a field on '%s'."
% (
obj.ct_fk_field,
obj.model._meta.label,
),
obj=obj.__class__,
id="admin.E303",
)
]
# There's one or more GenericForeignKeys; make sure that one of
# them uses the right ct_field and ct_fk_field.
for gfk in gfks:
if gfk.ct_field == obj.ct_field and gfk.fk_field == obj.ct_fk_field:
return []
return [
checks.Error(
"'%s' has no GenericForeignKey using content type field '%s' and "
"object ID field '%s'."
% (
obj.model._meta.label,
obj.ct_field,
obj.ct_fk_field,
),
obj=obj.__class__,
id="admin.E304",
)
]
class GenericInlineModelAdmin(InlineModelAdmin):
ct_field = "content_type"
ct_fk_field = "object_id"
formset = BaseGenericInlineFormSet
checks_class = GenericInlineModelAdminChecks
def get_formset(self, request, obj=None, **kwargs):
if "fields" in kwargs:
fields = kwargs.pop("fields")
else:
fields = flatten_fieldsets(self.get_fieldsets(request, obj))
exclude = [*(self.exclude or []), *self.get_readonly_fields(request, obj)]
if (
self.exclude is None
and hasattr(self.form, "_meta")
and self.form._meta.exclude
):
# Take the custom ModelForm's Meta.exclude into account only if the
# GenericInlineModelAdmin doesn't define its own.
exclude.extend(self.form._meta.exclude)
exclude = exclude or None
can_delete = self.can_delete and self.has_delete_permission(request, obj)
defaults = {
"ct_field": self.ct_field,
"fk_field": self.ct_fk_field,
"form": self.form,
"formfield_callback": partial(self.formfield_for_dbfield, request=request),
"formset": self.formset,
"extra": self.get_extra(request, obj),
"can_delete": can_delete,
"can_order": False,
"fields": fields,
"min_num": self.get_min_num(request, obj),
"max_num": self.get_max_num(request, obj),
"exclude": exclude,
**kwargs,
}
if defaults["fields"] is None and not modelform_defines_fields(
defaults["form"]
):
defaults["fields"] = ALL_FIELDS
return generic_inlineformset_factory(self.model, **defaults)
class GenericStackedInline(GenericInlineModelAdmin):
template = "admin/edit_inline/stacked.html"
class GenericTabularInline(GenericInlineModelAdmin):
template = "admin/edit_inline/tabular.html"
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/checks.py | django/contrib/contenttypes/checks.py | from itertools import chain
from django.apps import apps
from django.core.checks import Error
def check_generic_foreign_keys(app_configs, **kwargs):
from .fields import GenericForeignKeyDescriptor
if app_configs is None:
models = apps.get_models()
else:
models = chain.from_iterable(
app_config.get_models() for app_config in app_configs
)
errors = []
descriptors = (
obj
for model in models
for obj in vars(model).values()
if isinstance(obj, GenericForeignKeyDescriptor)
)
for descriptor in descriptors:
errors.extend(descriptor.field.check())
return errors
def check_model_name_lengths(app_configs, **kwargs):
if app_configs is None:
models = apps.get_models()
else:
models = chain.from_iterable(
app_config.get_models() for app_config in app_configs
)
errors = []
for model in models:
if len(model._meta.model_name) > 100:
errors.append(
Error(
"Model names must be at most 100 characters (got %d)."
% (len(model._meta.model_name),),
obj=model,
id="contenttypes.E005",
)
)
return errors
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/models.py | django/contrib/contenttypes/models.py | from collections import defaultdict
from django.apps import apps
from django.db import models
from django.db.models import Q
from django.utils.translation import gettext_lazy as _
class ContentTypeManager(models.Manager):
use_in_migrations = True
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Cache shared by all the get_for_* methods to speed up
# ContentType retrieval.
self._cache = {}
def get_by_natural_key(self, app_label, model):
try:
ct = self._cache[self.db][(app_label, model)]
except KeyError:
ct = self.get(app_label=app_label, model=model)
self._add_to_cache(self.db, ct)
return ct
def _get_opts(self, model, for_concrete_model):
if for_concrete_model:
model = model._meta.concrete_model
return model._meta
def _get_from_cache(self, opts):
key = (opts.app_label, opts.model_name)
return self._cache[self.db][key]
def get_for_model(self, model, for_concrete_model=True):
"""
Return the ContentType object for a given model, creating the
ContentType if necessary. Lookups are cached so that subsequent lookups
for the same model don't hit the database.
"""
opts = self._get_opts(model, for_concrete_model)
try:
return self._get_from_cache(opts)
except KeyError:
pass
# The ContentType entry was not found in the cache, therefore we
# proceed to load or create it.
try:
# Start with get() and not get_or_create() in order to use
# the db_for_read (see #20401).
ct = self.get(app_label=opts.app_label, model=opts.model_name)
except self.model.DoesNotExist:
# Not found in the database; we proceed to create it. This time
# use get_or_create to take care of any race conditions.
ct, created = self.get_or_create(
app_label=opts.app_label,
model=opts.model_name,
)
self._add_to_cache(self.db, ct)
return ct
def get_for_models(self, *models, for_concrete_models=True):
"""
Given *models, return a dictionary mapping {model: content_type}.
"""
results = {}
# Models that aren't already in the cache grouped by app labels.
needed_models = defaultdict(set)
# Mapping of opts to the list of models requiring it.
needed_opts = defaultdict(list)
for model in models:
opts = self._get_opts(model, for_concrete_models)
try:
ct = self._get_from_cache(opts)
except KeyError:
needed_models[opts.app_label].add(opts.model_name)
needed_opts[(opts.app_label, opts.model_name)].append(model)
else:
results[model] = ct
if needed_opts:
# Lookup required content types from the DB.
condition = Q(
*(
Q(("app_label", app_label), ("model__in", models))
for app_label, models in needed_models.items()
),
_connector=Q.OR,
)
cts = self.filter(condition)
for ct in cts:
opts_models = needed_opts.pop((ct.app_label, ct.model), [])
for model in opts_models:
results[model] = ct
self._add_to_cache(self.db, ct)
# Create content types that weren't in the cache or DB.
for (app_label, model_name), opts_models in needed_opts.items():
ct = self.create(app_label=app_label, model=model_name)
self._add_to_cache(self.db, ct)
for model in opts_models:
results[model] = ct
return results
def get_for_id(self, id):
"""
Lookup a ContentType by ID. Use the same shared cache as get_for_model
(though ContentTypes are not created on-the-fly by get_by_id).
"""
try:
ct = self._cache[self.db][id]
except KeyError:
# This could raise a DoesNotExist; that's correct behavior and will
# make sure that only correct ctypes get stored in the cache dict.
ct = self.get(pk=id)
self._add_to_cache(self.db, ct)
return ct
def clear_cache(self):
"""
Clear out the content-type cache.
"""
self._cache.clear()
def _add_to_cache(self, using, ct):
"""Insert a ContentType into the cache."""
# Note it's possible for ContentType objects to be stale; model_class()
# will return None. Hence, there is no reliance on
# model._meta.app_label here, just using the model fields instead.
key = (ct.app_label, ct.model)
self._cache.setdefault(using, {})[key] = ct
self._cache.setdefault(using, {})[ct.id] = ct
class ContentType(models.Model):
app_label = models.CharField(max_length=100)
model = models.CharField(_("python model class name"), max_length=100)
objects = ContentTypeManager()
class Meta:
verbose_name = _("content type")
verbose_name_plural = _("content types")
db_table = "django_content_type"
unique_together = [["app_label", "model"]]
def __str__(self):
return self.app_labeled_name
@property
def name(self):
model = self.model_class()
if not model:
return self.model
return str(model._meta.verbose_name)
@property
def app_labeled_name(self):
model = self.model_class()
if not model:
return self.model
return "%s | %s" % (
model._meta.app_config.verbose_name,
model._meta.verbose_name,
)
def model_class(self):
"""Return the model class for this type of content."""
try:
return apps.get_model(self.app_label, self.model)
except LookupError:
return None
def get_object_for_this_type(self, using=None, **kwargs):
"""
Return an object of this type for the keyword arguments given.
Basically, this is a proxy around this object_type's get_object() model
method. The ObjectNotExist exception, if thrown, will not be caught,
so code that calls this method should catch it.
"""
return self.model_class()._base_manager.using(using).get(**kwargs)
def get_all_objects_for_this_type(self, **kwargs):
"""
Return all objects of this type for the keyword arguments given.
"""
return self.model_class()._base_manager.filter(**kwargs)
def natural_key(self):
return (self.app_label, self.model)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/fields.py | django/contrib/contenttypes/fields.py | import functools
import itertools
from collections import defaultdict
from asgiref.sync import sync_to_async
from django.contrib.contenttypes.models import ContentType
from django.core import checks
from django.core.exceptions import FieldDoesNotExist, ObjectDoesNotExist
from django.db import DEFAULT_DB_ALIAS, models, router, transaction
from django.db.models import DO_NOTHING, ForeignObject, ForeignObjectRel
from django.db.models.base import ModelBase, make_foreign_order_accessors
from django.db.models.deletion import DatabaseOnDelete
from django.db.models.fields import Field
from django.db.models.fields.mixins import FieldCacheMixin
from django.db.models.fields.related import (
ReverseManyToOneDescriptor,
lazy_related_operation,
)
from django.db.models.query import prefetch_related_objects
from django.db.models.query_utils import PathInfo
from django.db.models.sql import AND
from django.db.models.sql.where import WhereNode
from django.db.models.utils import AltersData
from django.utils.functional import cached_property
class GenericForeignKey(FieldCacheMixin, Field):
"""
Provide a generic many-to-one relation through the ``content_type`` and
``object_id`` fields.
This class also doubles as an accessor to the related object (similar to
ForwardManyToOneDescriptor) by adding itself as a model attribute.
"""
many_to_many = False
many_to_one = True
one_to_many = False
one_to_one = False
def __init__(
self, ct_field="content_type", fk_field="object_id", for_concrete_model=True
):
super().__init__(editable=False)
self.ct_field = ct_field
self.fk_field = fk_field
self.for_concrete_model = for_concrete_model
self.is_relation = True
def contribute_to_class(self, cls, name, **kwargs):
super().contribute_to_class(cls, name, private_only=True, **kwargs)
setattr(cls, self.attname, GenericForeignKeyDescriptor(self))
def get_attname_column(self):
attname, column = super().get_attname_column()
return attname, None
@cached_property
def ct_field_attname(self):
return self.model._meta.get_field(self.ct_field).attname
def get_filter_kwargs_for_object(self, obj):
"""See corresponding method on Field"""
return {
self.fk_field: getattr(obj, self.fk_field),
self.ct_field_attname: getattr(obj, self.ct_field_attname),
}
def get_forward_related_filter(self, obj):
"""See corresponding method on RelatedField"""
return {
self.fk_field: obj.pk,
self.ct_field: ContentType.objects.get_for_model(obj).pk,
}
def check(self, **kwargs):
return [
*self._check_field_name(),
*self._check_object_id_field(),
*self._check_content_type_field(),
]
def _check_object_id_field(self):
try:
self.model._meta.get_field(self.fk_field)
except FieldDoesNotExist:
return [
checks.Error(
"The GenericForeignKey object ID references the "
"nonexistent field '%s'." % self.fk_field,
obj=self,
id="contenttypes.E001",
)
]
else:
return []
def _check_content_type_field(self):
"""
Check if field named `field_name` in model `model` exists and is a
valid content_type field (is a ForeignKey to ContentType).
"""
try:
field = self.model._meta.get_field(self.ct_field)
except FieldDoesNotExist:
return [
checks.Error(
"The GenericForeignKey content type references the "
"nonexistent field '%s.%s'."
% (self.model._meta.object_name, self.ct_field),
obj=self,
id="contenttypes.E002",
)
]
else:
if not isinstance(field, models.ForeignKey):
return [
checks.Error(
"'%s.%s' is not a ForeignKey."
% (self.model._meta.object_name, self.ct_field),
hint=(
"GenericForeignKeys must use a ForeignKey to "
"'contenttypes.ContentType' as the 'content_type' field."
),
obj=self,
id="contenttypes.E003",
)
]
elif field.remote_field.model != ContentType:
return [
checks.Error(
"'%s.%s' is not a ForeignKey to 'contenttypes.ContentType'."
% (self.model._meta.object_name, self.ct_field),
hint=(
"GenericForeignKeys must use a ForeignKey to "
"'contenttypes.ContentType' as the 'content_type' field."
),
obj=self,
id="contenttypes.E004",
)
]
elif isinstance(field.remote_field.on_delete, DatabaseOnDelete):
return [
checks.Error(
f"'{self.model._meta.object_name}.{self.ct_field}' cannot use "
"the database-level on_delete variant.",
hint="Change the on_delete rule to the non-database variant.",
obj=self,
id="contenttypes.E006",
)
]
else:
return []
@cached_property
def cache_name(self):
return self.name
def get_content_type(self, obj=None, id=None, using=None, model=None):
if obj is not None:
return ContentType.objects.db_manager(obj._state.db).get_for_model(
obj, for_concrete_model=self.for_concrete_model
)
elif id is not None:
return ContentType.objects.db_manager(using).get_for_id(id)
elif model is not None:
return ContentType.objects.db_manager(using).get_for_model(
model, for_concrete_model=self.for_concrete_model
)
else:
# This should never happen. I love comments like this, don't you?
raise Exception("Impossible arguments to GFK.get_content_type!")
class GenericForeignKeyDescriptor:
def __init__(self, field):
self.field = field
def is_cached(self, instance):
return self.field.is_cached(instance)
def get_prefetch_querysets(self, instances, querysets=None):
custom_queryset_dict = {}
if querysets is not None:
for queryset in querysets:
ct_id = self.field.get_content_type(
model=queryset.query.model, using=queryset.db
).pk
if ct_id in custom_queryset_dict:
raise ValueError(
"Only one queryset is allowed for each content type."
)
custom_queryset_dict[ct_id] = queryset
# For efficiency, group the instances by content type and then do one
# query per model
fk_dict = defaultdict(set)
# We need one instance for each group in order to get the right db:
instance_dict = {}
ct_attname = self.field.model._meta.get_field(self.field.ct_field).attname
for instance in instances:
# We avoid looking for values if either ct_id or fkey value is None
ct_id = getattr(instance, ct_attname)
if ct_id is not None:
fk_val = getattr(instance, self.field.fk_field)
if fk_val is not None:
fk_dict[ct_id].add(fk_val)
instance_dict[ct_id] = instance
ret_val = []
for ct_id, fkeys in fk_dict.items():
if ct_id in custom_queryset_dict:
# Return values from the custom queryset, if provided.
queryset = custom_queryset_dict[ct_id].filter(pk__in=fkeys)
else:
instance = instance_dict[ct_id]
ct = self.field.get_content_type(id=ct_id, using=instance._state.db)
queryset = ct.get_all_objects_for_this_type(pk__in=fkeys)
ret_val.extend(queryset.fetch_mode(instances[0]._state.fetch_mode))
# For doing the join in Python, we have to match both the FK val and
# the content type, so we use a callable that returns a (fk, class)
# pair.
def gfk_key(obj):
ct_id = getattr(obj, ct_attname)
if ct_id is None:
return None
else:
model = self.field.get_content_type(
id=ct_id, using=obj._state.db
).model_class()
return str(getattr(obj, self.field.fk_field)), model
return (
ret_val,
lambda obj: (obj._meta.pk.value_to_string(obj), obj.__class__),
gfk_key,
True,
self.field.name,
False,
)
def __get__(self, instance, cls=None):
if instance is None:
return self
# Don't use getattr(instance, self.ct_field) here because that might
# reload the same ContentType over and over (#5570). Instead, get the
# content type ID here, and later when the actual instance is needed,
# use ContentType.objects.get_for_id(), which has a global cache.
f = self.field.model._meta.get_field(self.field.ct_field)
ct_id = getattr(instance, f.attname, None)
pk_val = getattr(instance, self.field.fk_field)
rel_obj = self.field.get_cached_value(instance, default=None)
if rel_obj is None and self.field.is_cached(instance):
return rel_obj
if rel_obj is not None:
ct_match = (
ct_id
== self.field.get_content_type(obj=rel_obj, using=instance._state.db).id
)
pk_match = ct_match and rel_obj._meta.pk.to_python(pk_val) == rel_obj.pk
if pk_match:
return rel_obj
else:
rel_obj = None
instance._state.fetch_mode.fetch(self, instance)
return self.field.get_cached_value(instance)
def fetch_one(self, instance):
f = self.field.model._meta.get_field(self.field.ct_field)
ct_id = getattr(instance, f.attname, None)
pk_val = getattr(instance, self.field.fk_field)
rel_obj = None
if ct_id is not None:
ct = self.field.get_content_type(id=ct_id, using=instance._state.db)
try:
rel_obj = ct.get_object_for_this_type(
using=instance._state.db, pk=pk_val
)
except ObjectDoesNotExist:
pass
else:
rel_obj._state.fetch_mode = instance._state.fetch_mode
self.field.set_cached_value(instance, rel_obj)
def fetch_many(self, instances):
is_cached = self.field.is_cached
missing_instances = [i for i in instances if not is_cached(i)]
return prefetch_related_objects(missing_instances, self.field.name)
def __set__(self, instance, value):
ct = None
fk = None
if value is not None:
ct = self.field.get_content_type(obj=value)
fk = value.pk
setattr(instance, self.field.ct_field, ct)
setattr(instance, self.field.fk_field, fk)
self.field.set_cached_value(instance, value)
class GenericRel(ForeignObjectRel):
"""
Used by GenericRelation to store information about the relation.
"""
def __init__(
self,
field,
to,
related_name=None,
related_query_name=None,
limit_choices_to=None,
):
super().__init__(
field,
to,
related_name=related_query_name or "+",
related_query_name=related_query_name,
limit_choices_to=limit_choices_to,
on_delete=DO_NOTHING,
)
class GenericRelation(ForeignObject):
"""
Provide a reverse to a relation created by a GenericForeignKey.
"""
# Field flags
auto_created = False
empty_strings_allowed = False
many_to_many = False
many_to_one = False
one_to_many = True
one_to_one = False
rel_class = GenericRel
mti_inherited = False
def __init__(
self,
to,
object_id_field="object_id",
content_type_field="content_type",
for_concrete_model=True,
related_query_name=None,
limit_choices_to=None,
**kwargs,
):
kwargs["rel"] = self.rel_class(
self,
to,
related_query_name=related_query_name,
limit_choices_to=limit_choices_to,
)
# Reverse relations are always nullable (Django can't enforce that a
# foreign key on the related model points to this model).
kwargs["null"] = True
kwargs["blank"] = True
kwargs["on_delete"] = models.CASCADE
kwargs["editable"] = False
kwargs["serialize"] = False
# This construct is somewhat of an abuse of ForeignObject. This field
# represents a relation from pk to object_id field. But, this relation
# isn't direct, the join is generated reverse along foreign key. So,
# the from_field is object_id field, to_field is pk because of the
# reverse join.
super().__init__(to, from_fields=[object_id_field], to_fields=[], **kwargs)
self.object_id_field_name = object_id_field
self.content_type_field_name = content_type_field
self.for_concrete_model = for_concrete_model
def check(self, **kwargs):
return [
*super().check(**kwargs),
*self._check_generic_foreign_key_existence(),
]
def _is_matching_generic_foreign_key(self, field):
"""
Return True if field is a GenericForeignKey whose content type and
object id fields correspond to the equivalent attributes on this
GenericRelation.
"""
return (
isinstance(field, GenericForeignKey)
and field.ct_field == self.content_type_field_name
and field.fk_field == self.object_id_field_name
)
def _check_generic_foreign_key_existence(self):
target = self.remote_field.model
if isinstance(target, ModelBase):
fields = target._meta.private_fields
if any(self._is_matching_generic_foreign_key(field) for field in fields):
return []
else:
return [
checks.Error(
"The GenericRelation defines a relation with the model "
"'%s', but that model does not have a GenericForeignKey."
% target._meta.label,
obj=self,
id="contenttypes.E004",
)
]
else:
return []
def resolve_related_fields(self):
self.to_fields = [self.model._meta.pk.name]
return [
(
self.remote_field.model._meta.get_field(self.object_id_field_name),
self.model._meta.pk,
)
]
def get_local_related_value(self, instance):
return self.get_instance_value_for_fields(instance, self.foreign_related_fields)
def get_foreign_related_value(self, instance):
# We (possibly) need to convert object IDs to the type of the
# instances' PK in order to match up instances during prefetching.
return tuple(
foreign_field.to_python(val)
for foreign_field, val in zip(
self.foreign_related_fields,
self.get_instance_value_for_fields(instance, self.local_related_fields),
)
)
def _get_path_info_with_parent(self, filtered_relation):
"""
Return the path that joins the current model through any parent models.
The idea is that if you have a GFK defined on a parent model then we
need to join the parent model first, then the child model.
"""
# With an inheritance chain ChildTag -> Tag and Tag defines the
# GenericForeignKey, and a TaggedItem model has a GenericRelation to
# ChildTag, then we need to generate a join from TaggedItem to Tag
# (as Tag.object_id == TaggedItem.pk), and another join from Tag to
# ChildTag (as that is where the relation is to). Do this by first
# generating a join to the parent model, then generating joins to the
# child models.
path = []
opts = self.remote_field.model._meta.concrete_model._meta
parent_opts = opts.get_field(self.object_id_field_name).model._meta
target = parent_opts.pk
path.append(
PathInfo(
from_opts=self.model._meta,
to_opts=parent_opts,
target_fields=(target,),
join_field=self.remote_field,
m2m=True,
direct=False,
filtered_relation=filtered_relation,
)
)
# Collect joins needed for the parent -> child chain. This is easiest
# to do if we collect joins for the child -> parent chain and then
# reverse the direction (call to reverse() and use of
# field.remote_field.get_path_info()).
parent_field_chain = []
while parent_opts != opts:
field = opts.get_ancestor_link(parent_opts.model)
parent_field_chain.append(field)
opts = field.remote_field.model._meta
parent_field_chain.reverse()
for field in parent_field_chain:
path.extend(field.remote_field.path_infos)
return path
def get_path_info(self, filtered_relation=None):
opts = self.remote_field.model._meta
object_id_field = opts.get_field(self.object_id_field_name)
if object_id_field.model != opts.model:
return self._get_path_info_with_parent(filtered_relation)
else:
target = opts.pk
return [
PathInfo(
from_opts=self.model._meta,
to_opts=opts,
target_fields=(target,),
join_field=self.remote_field,
m2m=True,
direct=False,
filtered_relation=filtered_relation,
)
]
def get_reverse_path_info(self, filtered_relation=None):
opts = self.model._meta
from_opts = self.remote_field.model._meta
return [
PathInfo(
from_opts=from_opts,
to_opts=opts,
target_fields=(opts.pk,),
join_field=self,
m2m=False,
direct=False,
filtered_relation=filtered_relation,
)
]
def value_to_string(self, obj):
qs = getattr(obj, self.name).all()
return str([instance.pk for instance in qs])
def contribute_to_class(self, cls, name, **kwargs):
kwargs["private_only"] = True
super().contribute_to_class(cls, name, **kwargs)
self.model = cls
# Disable the reverse relation for fields inherited by subclasses of a
# model in multi-table inheritance. The reverse relation points to the
# field of the base model.
if self.mti_inherited:
self.remote_field.related_name = "+"
self.remote_field.related_query_name = None
setattr(cls, self.name, ReverseGenericManyToOneDescriptor(self.remote_field))
# Add get_RELATED_order() and set_RELATED_order() to the model this
# field belongs to, if the model on the other end of this relation
# is ordered with respect to its corresponding GenericForeignKey.
if not cls._meta.abstract:
def make_generic_foreign_order_accessors(related_model, model):
if self._is_matching_generic_foreign_key(
model._meta.order_with_respect_to
):
make_foreign_order_accessors(model, related_model)
lazy_related_operation(
make_generic_foreign_order_accessors,
self.model,
self.remote_field.model,
)
def set_attributes_from_rel(self):
pass
def get_internal_type(self):
return "ManyToManyField"
def get_content_type(self):
"""
Return the content type associated with this field's model.
"""
return ContentType.objects.get_for_model(
self.model, for_concrete_model=self.for_concrete_model
)
def get_extra_restriction(self, alias, remote_alias):
field = self.remote_field.model._meta.get_field(self.content_type_field_name)
contenttype_pk = self.get_content_type().pk
lookup = field.get_lookup("exact")(field.get_col(remote_alias), contenttype_pk)
return WhereNode([lookup], connector=AND)
def bulk_related_objects(self, objs, using=DEFAULT_DB_ALIAS):
"""
Return all objects related to ``objs`` via this ``GenericRelation``.
"""
return self.remote_field.model._base_manager.db_manager(using).filter(
**{
"%s__pk"
% self.content_type_field_name: ContentType.objects.db_manager(using)
.get_for_model(self.model, for_concrete_model=self.for_concrete_model)
.pk,
"%s__in" % self.object_id_field_name: [obj.pk for obj in objs],
}
)
class ReverseGenericManyToOneDescriptor(ReverseManyToOneDescriptor):
"""
Accessor to the related objects manager on the one-to-many relation created
by GenericRelation.
In the example::
class Post(Model):
comments = GenericRelation(Comment)
``post.comments`` is a ReverseGenericManyToOneDescriptor instance.
"""
@cached_property
def related_manager_cls(self):
return create_generic_related_manager(
self.rel.model._default_manager.__class__,
self.rel,
)
def create_generic_related_manager(superclass, rel):
"""
Factory function to create a manager that subclasses another manager
(generally the default manager of a given model) and adds behaviors
specific to generic relations.
"""
class GenericRelatedObjectManager(superclass, AltersData):
def __init__(self, instance=None):
super().__init__()
self.instance = instance
self.model = rel.model
self.get_content_type = functools.partial(
ContentType.objects.db_manager(instance._state.db).get_for_model,
for_concrete_model=rel.field.for_concrete_model,
)
self.content_type = self.get_content_type(instance)
self.content_type_field_name = rel.field.content_type_field_name
self.object_id_field_name = rel.field.object_id_field_name
self.prefetch_cache_name = rel.field.attname
self.pk_val = instance.pk
self.core_filters = {
"%s__pk" % self.content_type_field_name: self.content_type.id,
self.object_id_field_name: self.pk_val,
}
def __call__(self, *, manager):
manager = getattr(self.model, manager)
manager_class = create_generic_related_manager(manager.__class__, rel)
return manager_class(instance=self.instance)
do_not_call_in_templates = True
def __str__(self):
return repr(self)
def _apply_rel_filters(self, queryset):
"""
Filter the queryset for the instance this manager is bound to.
"""
db = self._db or router.db_for_read(self.model, instance=self.instance)
return (
queryset.using(db)
.fetch_mode(self.instance._state.fetch_mode)
.filter(**self.core_filters)
)
def _remove_prefetched_objects(self):
try:
self.instance._prefetched_objects_cache.pop(self.prefetch_cache_name)
except (AttributeError, KeyError):
pass # nothing to clear from cache
def get_queryset(self):
try:
return self.instance._prefetched_objects_cache[self.prefetch_cache_name]
except (AttributeError, KeyError):
queryset = super().get_queryset()
return self._apply_rel_filters(queryset)
def get_prefetch_querysets(self, instances, querysets=None):
if querysets and len(querysets) != 1:
raise ValueError(
"querysets argument of get_prefetch_querysets() should have a "
"length of 1."
)
queryset = querysets[0] if querysets else super().get_queryset()
queryset._add_hints(instance=instances[0])
queryset = queryset.using(queryset._db or self._db)
# Group instances by content types.
content_type_queries = [
models.Q.create(
[
(f"{self.content_type_field_name}__pk", content_type_id),
(f"{self.object_id_field_name}__in", {obj.pk for obj in objs}),
]
)
for content_type_id, objs in itertools.groupby(
sorted(instances, key=lambda obj: self.get_content_type(obj).pk),
lambda obj: self.get_content_type(obj).pk,
)
]
query = models.Q.create(content_type_queries, connector=models.Q.OR)
# We (possibly) need to convert object IDs to the type of the
# instances' PK in order to match up instances:
object_id_converter = instances[0]._meta.pk.to_python
content_type_id_field_name = "%s_id" % self.content_type_field_name
return (
queryset.filter(query),
lambda relobj: (
object_id_converter(getattr(relobj, self.object_id_field_name)),
getattr(relobj, content_type_id_field_name),
),
lambda obj: (obj.pk, self.get_content_type(obj).pk),
False,
self.prefetch_cache_name,
False,
)
def add(self, *objs, bulk=True):
self._remove_prefetched_objects()
db = router.db_for_write(self.model, instance=self.instance)
def check_and_update_obj(obj):
if not isinstance(obj, self.model):
raise TypeError(
"'%s' instance expected, got %r"
% (self.model._meta.object_name, obj)
)
setattr(obj, self.content_type_field_name, self.content_type)
setattr(obj, self.object_id_field_name, self.pk_val)
if bulk:
pks = []
for obj in objs:
if obj._state.adding or obj._state.db != db:
raise ValueError(
"%r instance isn't saved. Use bulk=False or save "
"the object first." % obj
)
check_and_update_obj(obj)
pks.append(obj.pk)
self.model._base_manager.using(db).filter(pk__in=pks).update(
**{
self.content_type_field_name: self.content_type,
self.object_id_field_name: self.pk_val,
}
)
else:
with transaction.atomic(using=db, savepoint=False):
for obj in objs:
check_and_update_obj(obj)
obj.save()
add.alters_data = True
async def aadd(self, *objs, bulk=True):
return await sync_to_async(self.add)(*objs, bulk=bulk)
aadd.alters_data = True
def remove(self, *objs, bulk=True):
if not objs:
return
self._clear(self.filter(pk__in=[o.pk for o in objs]), bulk)
remove.alters_data = True
async def aremove(self, *objs, bulk=True):
return await sync_to_async(self.remove)(*objs, bulk=bulk)
aremove.alters_data = True
def clear(self, *, bulk=True):
self._clear(self, bulk)
clear.alters_data = True
async def aclear(self, *, bulk=True):
return await sync_to_async(self.clear)(bulk=bulk)
aclear.alters_data = True
def _clear(self, queryset, bulk):
self._remove_prefetched_objects()
db = router.db_for_write(self.model, instance=self.instance)
queryset = queryset.using(db)
if bulk:
# `QuerySet.delete()` creates its own atomic block which
# contains the `pre_delete` and `post_delete` signal handlers.
queryset.delete()
else:
with transaction.atomic(using=db, savepoint=False):
for obj in queryset:
obj.delete()
_clear.alters_data = True
def set(self, objs, *, bulk=True, clear=False):
# Force evaluation of `objs` in case it's a queryset whose value
# could be affected by `manager.clear()`. Refs #19816.
objs = tuple(objs)
db = router.db_for_write(self.model, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
if clear:
self.clear()
self.add(*objs, bulk=bulk)
else:
old_objs = set(self.using(db).all())
new_objs = []
for obj in objs:
if obj in old_objs:
old_objs.remove(obj)
else:
new_objs.append(obj)
self.remove(*old_objs)
self.add(*new_objs, bulk=bulk)
set.alters_data = True
async def aset(self, objs, *, bulk=True, clear=False):
return await sync_to_async(self.set)(objs, bulk=bulk, clear=clear)
aset.alters_data = True
def create(self, **kwargs):
self._remove_prefetched_objects()
kwargs[self.content_type_field_name] = self.content_type
kwargs[self.object_id_field_name] = self.pk_val
db = router.db_for_write(self.model, instance=self.instance)
return super().using(db).create(**kwargs)
create.alters_data = True
async def acreate(self, **kwargs):
return await sync_to_async(self.create)(**kwargs)
acreate.alters_data = True
def get_or_create(self, **kwargs):
kwargs[self.content_type_field_name] = self.content_type
kwargs[self.object_id_field_name] = self.pk_val
db = router.db_for_write(self.model, instance=self.instance)
return super().using(db).get_or_create(**kwargs)
get_or_create.alters_data = True
async def aget_or_create(self, **kwargs):
return await sync_to_async(self.get_or_create)(**kwargs)
aget_or_create.alters_data = True
def update_or_create(self, **kwargs):
kwargs[self.content_type_field_name] = self.content_type
kwargs[self.object_id_field_name] = self.pk_val
db = router.db_for_write(self.model, instance=self.instance)
return super().using(db).update_or_create(**kwargs)
update_or_create.alters_data = True
async def aupdate_or_create(self, **kwargs):
return await sync_to_async(self.update_or_create)(**kwargs)
aupdate_or_create.alters_data = True
return GenericRelatedObjectManager
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/__init__.py | django/contrib/contenttypes/__init__.py | python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false | |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/prefetch.py | django/contrib/contenttypes/prefetch.py | from django.db.models import Prefetch
from django.db.models.query import ModelIterable, RawQuerySet
class GenericPrefetch(Prefetch):
def __init__(self, lookup, querysets, to_attr=None):
for queryset in querysets:
if queryset is not None and (
isinstance(queryset, RawQuerySet)
or (
hasattr(queryset, "_iterable_class")
and not issubclass(queryset._iterable_class, ModelIterable)
)
):
raise ValueError(
"Prefetch querysets cannot use raw(), values(), and values_list()."
)
self.querysets = querysets
super().__init__(lookup, to_attr=to_attr)
def __getstate__(self):
obj_dict = self.__dict__.copy()
obj_dict["querysets"] = []
for queryset in self.querysets:
if queryset is not None:
queryset = queryset._chain()
# Prevent the QuerySet from being evaluated
queryset._result_cache = []
queryset._prefetch_done = True
obj_dict["querysets"].append(queryset)
return obj_dict
def get_current_querysets(self, level):
if self.get_current_prefetch_to(level) == self.prefetch_to:
return self.querysets
return None
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/apps.py | django/contrib/contenttypes/apps.py | from django.apps import AppConfig
from django.contrib.contenttypes.checks import (
check_generic_foreign_keys,
check_model_name_lengths,
)
from django.core import checks
from django.db.models.signals import post_migrate, pre_migrate
from django.utils.translation import gettext_lazy as _
from .management import create_contenttypes, inject_rename_contenttypes_operations
class ContentTypesConfig(AppConfig):
default_auto_field = "django.db.models.AutoField"
name = "django.contrib.contenttypes"
verbose_name = _("Content Types")
def ready(self):
pre_migrate.connect(inject_rename_contenttypes_operations, sender=self)
post_migrate.connect(create_contenttypes)
checks.register(check_generic_foreign_keys, checks.Tags.models)
checks.register(check_model_name_lengths, checks.Tags.models)
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/forms.py | django/contrib/contenttypes/forms.py | from django.contrib.contenttypes.models import ContentType
from django.db import models
from django.forms import ModelForm, modelformset_factory
from django.forms.models import BaseModelFormSet
class BaseGenericInlineFormSet(BaseModelFormSet):
"""
A formset for generic inline objects to a parent.
"""
def __init__(
self,
data=None,
files=None,
instance=None,
save_as_new=False,
prefix=None,
queryset=None,
**kwargs,
):
opts = self.model._meta
self.instance = instance
self.rel_name = (
opts.app_label
+ "-"
+ opts.model_name
+ "-"
+ self.ct_field.name
+ "-"
+ self.ct_fk_field.name
)
self.save_as_new = save_as_new
if self.instance is None or not self.instance._is_pk_set():
qs = self.model._default_manager.none()
else:
if queryset is None:
queryset = self.model._default_manager
qs = queryset.filter(
**{
self.ct_field.name: ContentType.objects.get_for_model(
self.instance, for_concrete_model=self.for_concrete_model
),
self.ct_fk_field.name: self.instance.pk,
}
)
super().__init__(queryset=qs, data=data, files=files, prefix=prefix, **kwargs)
def initial_form_count(self):
if self.save_as_new:
return 0
return super().initial_form_count()
@classmethod
def get_default_prefix(cls):
opts = cls.model._meta
return (
opts.app_label
+ "-"
+ opts.model_name
+ "-"
+ cls.ct_field.name
+ "-"
+ cls.ct_fk_field.name
)
def save_new(self, form, commit=True):
setattr(
form.instance,
self.ct_field.attname,
ContentType.objects.get_for_model(self.instance).pk,
)
setattr(form.instance, self.ct_fk_field.attname, self.instance.pk)
return form.save(commit=commit)
def generic_inlineformset_factory(
model,
form=ModelForm,
formset=BaseGenericInlineFormSet,
ct_field="content_type",
fk_field="object_id",
fields=None,
exclude=None,
extra=3,
can_order=False,
can_delete=True,
max_num=None,
formfield_callback=None,
validate_max=False,
for_concrete_model=True,
min_num=None,
validate_min=False,
absolute_max=None,
can_delete_extra=True,
):
"""
Return a ``GenericInlineFormSet`` for the given kwargs.
You must provide ``ct_field`` and ``fk_field`` if they are different from
the defaults ``content_type`` and ``object_id`` respectively.
"""
opts = model._meta
# if there is no field called `ct_field` let the exception propagate
ct_field = opts.get_field(ct_field)
if (
not isinstance(ct_field, models.ForeignKey)
or ct_field.remote_field.model != ContentType
):
raise Exception("fk_name '%s' is not a ForeignKey to ContentType" % ct_field)
fk_field = opts.get_field(fk_field) # let the exception propagate
exclude = [*(exclude or []), ct_field.name, fk_field.name]
FormSet = modelformset_factory(
model,
form=form,
formfield_callback=formfield_callback,
formset=formset,
extra=extra,
can_delete=can_delete,
can_order=can_order,
fields=fields,
exclude=exclude,
max_num=max_num,
validate_max=validate_max,
min_num=min_num,
validate_min=validate_min,
absolute_max=absolute_max,
can_delete_extra=can_delete_extra,
)
FormSet.ct_field = ct_field
FormSet.ct_fk_field = fk_field
FormSet.for_concrete_model = for_concrete_model
return FormSet
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/management/__init__.py | django/contrib/contenttypes/management/__init__.py | from django.apps import apps as global_apps
from django.db import DEFAULT_DB_ALIAS, IntegrityError, migrations, router, transaction
class RenameContentType(migrations.RunPython):
def __init__(self, app_label, old_model, new_model):
self.app_label = app_label
self.old_model = old_model
self.new_model = new_model
super().__init__(self.rename_forward, self.rename_backward)
def _rename(self, apps, schema_editor, old_model, new_model):
ContentType = apps.get_model("contenttypes", "ContentType")
db = schema_editor.connection.alias
if not router.allow_migrate_model(db, ContentType):
return
try:
content_type = ContentType.objects.db_manager(db).get_by_natural_key(
self.app_label, old_model
)
except ContentType.DoesNotExist:
pass
else:
content_type.model = new_model
try:
with transaction.atomic(using=db):
content_type.save(using=db, update_fields={"model"})
except IntegrityError:
# Gracefully fallback if a stale content type causes a
# conflict as remove_stale_contenttypes will take care of
# asking the user what should be done next.
content_type.model = old_model
else:
# Clear the cache as the `get_by_natural_key()` call will cache
# the renamed ContentType instance by its old model name.
ContentType.objects.clear_cache()
def rename_forward(self, apps, schema_editor):
self._rename(apps, schema_editor, self.old_model, self.new_model)
def rename_backward(self, apps, schema_editor):
self._rename(apps, schema_editor, self.new_model, self.old_model)
def inject_rename_contenttypes_operations(
plan=None, apps=global_apps, using=DEFAULT_DB_ALIAS, **kwargs
):
"""
Insert a `RenameContentType` operation after every planned `RenameModel`
operation.
"""
if plan is None:
return
# Determine whether or not the ContentType model is available.
try:
ContentType = apps.get_model("contenttypes", "ContentType")
except LookupError:
available = False
else:
if not router.allow_migrate_model(using, ContentType):
return
available = True
for migration, backward in plan:
if (migration.app_label, migration.name) == ("contenttypes", "0001_initial"):
# There's no point in going forward if the initial contenttypes
# migration is unapplied as the ContentType model will be
# unavailable from this point.
if backward:
break
else:
available = True
continue
# The ContentType model is not available yet.
if not available:
continue
inserts = []
for index, operation in enumerate(migration.operations):
if isinstance(operation, migrations.RenameModel):
operation = RenameContentType(
migration.app_label,
operation.old_name_lower,
operation.new_name_lower,
)
inserts.append((index + 1, operation))
for inserted, (index, operation) in enumerate(inserts):
migration.operations.insert(inserted + index, operation)
def create_contenttypes(
app_config,
verbosity=2,
interactive=True,
using=DEFAULT_DB_ALIAS,
apps=global_apps,
**kwargs,
):
"""
Create content types for models in the given app.
"""
if not app_config.models_module:
return
try:
app_config = apps.get_app_config(app_config.label)
ContentType = apps.get_model("contenttypes", "ContentType")
except LookupError:
return
if not router.allow_migrate_model(using, ContentType):
return
all_model_names = {model._meta.model_name for model in app_config.get_models()}
if not all_model_names:
return
ContentType.objects.clear_cache()
existing_model_names = set(
ContentType.objects.using(using)
.filter(app_label=app_config.label)
.values_list("model", flat=True)
)
cts = [
ContentType(app_label=app_config.label, model=model_name)
for model_name in sorted(all_model_names - existing_model_names)
]
ContentType.objects.using(using).bulk_create(cts)
if verbosity >= 2:
for ct in cts:
print(f"Adding content type '{ct.app_label} | {ct.model}'")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
django/django | https://github.com/django/django/blob/3201a895cba335000827b28768a7b7105c81b415/django/contrib/contenttypes/management/commands/remove_stale_contenttypes.py | django/contrib/contenttypes/management/commands/remove_stale_contenttypes.py | import itertools
from django.apps import apps
from django.contrib.contenttypes.models import ContentType
from django.core.management import BaseCommand
from django.db import DEFAULT_DB_ALIAS, connections, router
from django.db.models.deletion import Collector
class Command(BaseCommand):
help = "Deletes stale content types in the database."
def add_arguments(self, parser):
parser.add_argument(
"--noinput",
"--no-input",
action="store_false",
dest="interactive",
help="Tells Django to NOT prompt the user for input of any kind.",
)
parser.add_argument(
"--database",
default=DEFAULT_DB_ALIAS,
choices=tuple(connections),
help='Nominates the database to use. Defaults to the "default" database.',
)
parser.add_argument(
"--include-stale-apps",
action="store_true",
default=False,
help=(
"Deletes stale content types including ones from previously "
"installed apps that have been removed from INSTALLED_APPS."
),
)
def handle(self, **options):
db = options["database"]
include_stale_apps = options["include_stale_apps"]
interactive = options["interactive"]
verbosity = options["verbosity"]
if not router.allow_migrate_model(db, ContentType):
return
ContentType.objects.clear_cache()
apps_content_types = itertools.groupby(
ContentType.objects.using(db).order_by("app_label", "model"),
lambda obj: obj.app_label,
)
for app_label, content_types in apps_content_types:
if not include_stale_apps and app_label not in apps.app_configs:
continue
to_remove = [ct for ct in content_types if ct.model_class() is None]
# Confirm that the content type is stale before deletion.
using = router.db_for_write(ContentType)
if to_remove:
if interactive:
ct_info = []
for ct in to_remove:
ct_info.append(
" - Content type for %s.%s" % (ct.app_label, ct.model)
)
collector = Collector(
using=using, origin=ct, force_collection=True
)
collector.collect([ct])
for obj_type, objs in collector.data.items():
if objs != {ct}:
ct_info.append(
" - %s %s object(s)"
% (
len(objs),
obj_type._meta.label,
)
)
content_type_display = "\n".join(ct_info)
self.stdout.write(
"Some content types in your database are stale and can be "
"deleted.\n"
"Any objects that depend on these content types will also be "
"deleted.\n"
"The content types and dependent objects that would be deleted "
"are:\n\n"
f"{content_type_display}\n\n"
"This list doesn't include any cascade deletions to data "
"outside of Django\n"
"models (uncommon).\n\n"
"Are you sure you want to delete these content types?\n"
"If you're unsure, answer 'no'."
)
ok_to_delete = input("Type 'yes' to continue, or 'no' to cancel: ")
else:
ok_to_delete = "yes"
if ok_to_delete == "yes":
for ct in to_remove:
if verbosity >= 2:
self.stdout.write(
"Deleting stale content type '%s | %s'"
% (ct.app_label, ct.model)
)
ct.delete()
else:
if verbosity >= 2:
self.stdout.write("Stale content types remain.")
| python | BSD-3-Clause | 3201a895cba335000827b28768a7b7105c81b415 | 2026-01-04T14:38:15.489092Z | false |
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